# The demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p is the unit price in dollars and x is the quantity demanded each week, measured in units of

70,179 questions
1. ## math

The demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p=-0.01x^2-0.3x+20

asked by Britney on December 5, 2012
2. ## !math (1)

The demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p = -0.01x^2 - 0.1 x +

asked by Vanessa on April 24, 2014
3. ## !math (1)

The demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p = -0.01x^2 - 0.1 x +

asked by Mia on April 25, 2014
4. ## math

The demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p=-0.01x^2-0.3x+20

asked by Britney on December 5, 2012
5. ## calculus

The demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p=-0.01x^2-0.3x+19

asked by Riley on April 10, 2013
6. ## Brief Calculus

The demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p = −0.01x2 − 0.3x

asked by Tiffany on August 3, 2016
7. ## *math (1)

The demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p = -0.01x^2 - 0.1 x +

asked by Vanessa on April 23, 2014
8. ## cal

The demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p = -0.01x^2 - 0.3x +

asked by jane on December 2, 2014
9. ## calc

The demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p = -0.01x^2 - 0.3x +

asked by jane on December 2, 2014
10. ## SS

A company introduces a printer that does not require ink cartridges. As a result, the price of printers that use ink drops. What is another likely outcome? a) The price of ink cartridges goes up. b) The price of ink cartridges drops. *** c) The demand for

asked by Anonymous on April 24, 2017
11. ## social studies

A company introduces a printer that does not require ink cartridges. As a result, the price of printers that use ink drops. What is another likely outcome? A. the price of ink cartridges goes up. B. the price of ink cartridges drops. C. the demand for ink

asked by oof on May 22, 2018
12. ## Math Statistics

Suppose you work for the quality control department at Hewlett Packard. You know that ink jet cartridges are sometimes defective. The current defective rate is 8 cartridges per package of 100 (i.e. 0.08) What is the probability of sampling 12 cartridges

asked by Jaz on June 4, 2018
13. ## Math

Suppose you work for the quality control department at Hewlett Packard. You know that ink jet cartridges are sometimes defective. The current defective rate is 8 cartridges per package of 100 (i.e. 0.08) What is the probability of sampling 12 cartridges

asked by Jaz on June 4, 2018
14. ## math

tom need to buy ink cartridges and printer. each ink cartridges costs 30.00 dollars each ream of papers costs 5.00 dollars. he has 100 dollars to spend which combinations of ink cartridges and printers paper that he may purchase?

asked by lolita on February 5, 2019

asked by flash on July 13, 2011
16. ## economics

Suppose a monopolist faces production function Q = 3KL and demand function Q = 12 − P. Derive the input demand (as a function of Q, r and w) for capital and labor.

asked by Yash on March 31, 2011
17. ## math

Terrell has a water purifier for backpacking. It will purify 1 liter of water in 1 minute. How long would it take Terrell to purify enough water for 4 canteens that each hold 750 mL, and two that each hold 1.5 L?

asked by Rishita Papaiya on May 5, 2015
18. ## statistics

An internet supplier of refilled ink cartridges for ink jet printers sold cartridges to 30,000 customers over the past two months. A random sample of 1000 of those customers revealed that 18% were not happy with their purchase. The margin of error was 2%.

asked by Anonymous on February 5, 2012
19. ## Calculus

The marginal revenue for x items in dollars is given by R′(x)=−4.5x+6. Determine (a) the revenue function and (b) the demand function. I know the revenue function is R(x)=6x-2.25x^2 just by finding the antiderivative. demand = revenue - cost, but how

asked by Ann on May 18, 2014
20. ## Economic

Suppose that labor is the only input used by a perfectly competitive firm that can hire workers for \$50 per day. The firm’s production function is as follows: Days of Labor/Units of Output: 0/0, 1/7, 2/13, 3/19, 4/25, 5/28, 6/29, 7/29 c. Compute the

asked by Mariah on December 4, 2006
21. ## university-health economics

Given the following demand function for medical care: Q=100-5p Where: P = is the price of health service. Q = quantity demanded. What is the quantity demanded at p = 5. Draw the demand curve for medical care. Suppose the price rise to (6), calculate the

asked by abdel salam on December 28, 2009
22. ## Science 10

Need examples of food for Chemistry Reactions 1. Synthesis 2. Decomposition 3.Single Replacement 3. Double Replacement So for synthesis ( A + B --> AB ) I did, Macaroni + Cheese --> Mac n Cheese For Decomposition ( AB --> A + B ) I did, Dough --> Wheat +

asked by Rav on October 27, 2014
23. ## economics

1. Chipo has the following utility function of 2 goods Pies (X) and fanta (Y): U= log X + log Y. (a) show that the consumer maximizes utility subject to the budget constraint. (b) derive the demand functions of good X and good Y. 2. You are given the

asked by hass on December 30, 2012
24. ## economics

1. Chipo has the following utility function of 2 goods Pies (X) and fanta (Y): U= log X + log Y. (a) show that the consumer maximizes utility subject to the budget constraint. (b) derive the demand functions of good X and good Y. 2. You are given the

asked by hass on December 30, 2012
25. ## economics

1. Chipo has the following utility function of 2 goods Pies (X) and fanta (Y): U= log X + log Y. (a) show that the consumer maximizes utility subject to the budget constraint. (b) derive the demand functions of good X and good Y. 2. You are given the

asked by hass on December 30, 2012
26. ## Math

wxmaxima at which prices will make maximum profit if the demand function is q(x)=8.8*(sqrt(21-0.3*p^^2)). thank you

asked by Anita on January 13, 2012
27. ## math

1) a company manufactures and sells a specialty watch. the financial reserach department detemines that at the price of \$88 each, the demand would be 2,000 watches and at \$38 each the demand will be 12,000 watches. A) assuming a linear relationship between

asked by Laly on November 6, 2009
28. ## math

1) a company manufactures and sells a specialty watch. the financial reserach department detemines that at the price of \$88 each, the demand would be 2,000 watches and at \$38 each the demand will be 12,000 watches. A) assuming a linear relationship between

asked by Laly on November 6, 2009
29. ## Math

There are 12 card numbered 1 to 12 in a box. If tow cards are selected, what is the probability that the sum is odd (I) with replacement (II) without replacement. SOLUTIONS (1/4,6/11) HOW I CAN SOLVE WITH REPLACEMENT. Knowing that Sample space (S) =

asked by Faroug on July 31, 2016
30. ## Economics

An industry has only two firms producing outputs y1 and y2, respectively. The first firm has a cost function of TC(y1) = 20 + 20y1 and the second has a cost function TC(y2) = 10 + 5y2 + y22. The demand function for the product these firms make is Q = 120 -

asked by EJ on November 22, 2014
31. ## Economics

An industry has only two firms producing outputs y1 and y2, respectively. The first firm has a cost function of TC(y1) = 20 + 20y1 and the second has a cost function TC(y2) = 10 + 5y2 + y22. The demand function for the product these firms make is Q = 120 -

asked by EJ on November 22, 2014
32. ## Chemistry

Chemistry help!!!!!!!!!!!? Make a chart and define the following reactions using the following 3 examples methods. Wrie out in letter(a,b,c), Symbol(Na,Cl,O) An name form(sodium,chloride,oxygen) A direct combination b decompition C single replacement and D

asked by M on January 11, 2009
33. ## calculus

let x-f(p)=10(16-p) be a demand function find the domain of this function and find where demand is elastic, inelastic, and unit.

asked by Brian on April 8, 2011
34. ## algebra II

A set of input values is sometimes referred to as the replacement set for the independent variables. Evaluate each function for the given replacement set. f(x)=3x-6;{-3.5,-1,1/4,2,11} f(x)=x(1-2x);{-8,2/3,1,9,4}

asked by Kate on January 4, 2009
35. ## algebra II

A set of input values is sometimes referred to as the replacement set for the independent variables. Evaluate each function for the given replacement set. f(x)=3x-6;{-3.5,-1,1/4,2,11}

asked by Kate on January 4, 2009
36. ## Calculus

Given the demand function q=173-5p, determine the price where demand has unit elasticity.

asked by Melissa on November 4, 2010
37. ## Calculus

Given the demand function q=173-5p, determine the price where demand has unit elasticity.

asked by Melissa on November 4, 2010
38. ## Agricultural Policy

Find the price and quantity that will satisfy the condition for static efficiency in the use of water resources given the following demand and supply equations for water: Demand: P=600-Q Supply: P=2+Q

asked by jesse on February 17, 2009
39. ## college/Agricultural policy

Find the price and quantity that will satisfy the condition fpr static efficiency in the use of water resources given the following demand and supply equations for water: Demand: P=600-Q Supply: P=2+Q

asked by jesse on February 17, 2009
40. ## Math

The demand for a commodity generally decreases as the price is raised. Suppose that the demand for oil (per capita per year) is D(p)=800/p barrels, where p is the price per barrel in dollars. Find the demand when p=55. Estimate the decrease in demand if p

asked by Anonymous on March 30, 2015
41. ## Calc

The demand for a commodity generally decreases as the price is raised. Suppose that the demand for oil (per capita per year) is D(p)=800/p barrels, where p is the price per barrel in dollars. Find the demand when p=55. Estimate the decrease in demand if p

asked by Anonymous on March 30, 2015
42. ## Calculus

Find the price elasticity of demand. The demand function for the product is p=40-2x

asked by Alan on April 17, 2012
43. ## MATHS

demand function for kerosene: Kd=a0+a1Pk supply function for kerosene: Ks=b0+b1Pk+b2Pg demand function for gasoline: Gd=c0+c1Pg+u1 (ul here shows a exogenous random shock to the demand of gasoline) supply function for gasoline: Gs=d0+d1Pk+d2Pg a) if

asked by May on September 9, 2010
44. ## economic

the demand function, P=20-0.5Q Determine the price elasticity of demand when P=2

asked by EMERIC on July 25, 2016
45. ## economics

If the demand function is Qd=-0.5+20,calculate the quantity demand when the price is 15.00?

asked by CEO on June 27, 2019
46. ## finite

1. Alabama State University’s Bookstore has determined that the supply function for a certain author’s newest book is p = (1/300)q + 13. The demand function for this book is p = -.03q + 19. Graph both demand and supply functions on the same set of

asked by cjones on April 29, 2012
47. ## Micro economics

Consider a firm with the following production function: q = (ak+bl)^(1/2) The firm's total costs can be written as C = F + rk + wl 1. Calculate the firm's contingent factor demand. Illustrate it in a graph including the firm's isoquant map 2. Assume that

asked by Rasmus on April 8, 2014
48. ## Economics

The demand function for two commodities A and B in a market are given as follows. QA=96-2PA-3PB, QB=30-25PA+0.32Y. Where PA and PB are prices of commodity A and B respectively, and Y is consumers average money income, given PA=#2, PB=#4, and Y=#1000.

asked by CUPSON on April 28, 2019
49. ## Managerial Economics

Suppose you decide to produce a product and you discover it has a demand function given by; Q = 10P^-0.5Y^0.75 (I) calculate the price elasticity of demand for the product. (ii) calculate the income elasticity of demand.

asked by Andrew on January 11, 2018
50. ## Calculus with Analytical Geometry

1. A bullet is shot upwards with an initial velocity of 1000 ft/sec from a point 20 ft above groand its height above the ground at time t is given by h(t)=-16t^2 + 1000t + 20. How high will the bullet go and how long will it take the bullet to reach the

asked by Sherianna on March 4, 2016
51. ## Physics

a) Family Smith has already installed PV in their house. Now, they also want to cover their needs for warm water with solar energy. For this, they consider having a solar thermal water heating system. Considering that the need for warm water is 100L/day,

asked by youlifex on October 24, 2013
52. ## math

9. Suppose that the total market demand for a product consists of the demands of individual 1 and individual 2. The demand equations of the two individuals are given by the following equations: QD,1 =20-P QD,2 =60-5P Suppose that the total market supply is

asked by anon on September 29, 2019
53. ## chemistry

I A QUESTION WHAT IS Mg+HCL->MgCL2 +H2 IS IT SYNTHESIS, SINGLE REPLACEMENT, DOUBLE REPLACEMENT OR DECOMPOSITION THX BYE Single replacement. Mg replaced the H.

asked by confused on December 5, 2006
54. ## Math

The demand for rice in Japan for a particular year was estimated by the general function q = f (p) =Ap^(-0.13), where p represents the price of a unit of rice, A represents a constant that can be calculated uniquely for a particular year, and q represents

asked by Jaki on April 1, 2014
55. ## calcules

The demand for rice in Japan for a particular year was estimated by the general function q = f (p) =Ap^(-0.13), where p represents the price of a unit of rice, A represents a constant that can be calculated uniquely for a particular year, and q represents

asked by wonderful on April 1, 2014
56. ## calcules

The demand for rice in Japan for a particular year was estimated by the general function q = f (p) =Ap^(-0.13), where p represents the price of a unit of rice, A represents a constant that can be calculated uniquely for a particular year, and q represents

asked by Merfit on April 2, 2014
57. ## Microeconomics

Assume the market demand of 500mls of mineral water is given by: P=9–0.25Qd and the market supply being Qs=-12+12P. What is the quantity demand if the price of mineral water is \$6

asked by Daniel Maleek on August 23, 2019
58. ## economics

Let U(x; y) = 5x:8y:2 showing all derivation work, find: (a) the Marshallian demand functions for x and y (b) the Indirect Utility Function (c) the compensated demand functions xc and yc

asked by Anonymous on February 21, 2014
59. ## Calculus 1

Find the equlibrium point for each pair demand and supply function. Demand:q = 8800-30x; supply:q = 7000+ 15x

asked by Blake on July 22, 2010
60. ## Economics

There are 10 identical consumers whose demand is D: p = 20 - 10q. There are 10 identical firms, each firm's marginal cost is MC(q)= 5 + 5q. The market is competitive. a) derive the market demand function b) derive the market supply function c) what is the

asked by Andrea on February 4, 2013
61. ## Chemistry..

1.What is going on at the atomic level if a precipitate forms in a double replacement reaction? 2. Has a single or double replacement reaction occured if water or a gas is formed? What would you perceive as evidence that a reaction has occured if either

asked by Anonymous on January 11, 2013
62. ## calculus

Can anyone walk me through the steps of solving either of these problems? 1)Determine the percentage of change of f(x)=e^0.9x at x=15 and x=30 2)For the demand function q=150(245-p^2), find E(p) and determine if the demand is elastic or inelastic (or

asked by Sally on April 10, 2008
63. ## Calculus

The demand function for the Luminar desk lamp is given by the following function where x is the quantity demanded in thousands and p is the unit price in dollars. p = f(x) = -0.1x2 - 0.3x + 39 (a) Find f '(x). f '(x) = (b) What is the rate of change of the

asked by Mike on June 13, 2013
64. ## econ

1. Consider a pure monopolist with short-run total cost function given by STC = 1000 +200 Q + 12.5 Q2. Suppose also that this firm faces an inverse market demand function given by P = 800 – 20 Q. a. How much should this firm produce and what price should

asked by LB on July 5, 2011
65. ## math help

Universal instruments found that the monthly demand for its new line of Galaxy Home Computers t months after placing the line on the market was given by D(t) = 2900 − 2300e−0.08t (t > 0) Graph this function and answer the following questions. (a) What

asked by Ellen on July 20, 2012
66. ## Calculus

Universal instruments found that the monthly demand for its new line of Galaxy Home Computers t months after placing the line on the market was given by D(t) = 2900 − 2300e−0.08t (t > 0) Graph this function and answer the following questions. (a) What

asked by Emma on July 19, 2012
67. ## Calculus

The unit selling price p (in dollars) and the quantity demanded x (in pairs) of a certain brand of women’s shoes are given by the demand equation p(x) = 100e^-0.0001x f or 0 _< x _< 20,000 a. Find the revenue function,R. (Hint: R(x)= x(p(x)), since the

asked by Tima on April 10, 2013
68. ## Calculus

The unit selling price p (in dollars) and the quantity demanded x (in pairs) of a certain brand of women’s shoes are given by the demand equation p(x) = 100e^-0.0001x f or 0 _< x _< 20,000 a. Find the revenue function,R. (Hint: R(x)= x(p(x)), since the

asked by Wiz on April 9, 2013
69. ## Calculus

The unit selling price p (in dollars) and the quantity demanded x (in pairs) of a certain brand of women’s shoes are given by the demand equation P(x) = 100e^-0.001x f or 0 _< x _< 20,000. a. Find the revenue function, R. (Hint: R(x) = x(p(x)), since the

asked by Wiz on April 12, 2013
70. ## Calculus

The unit selling price p (in dollars) and the quantity demanded x (in pairs) of a certain brand of women’s shoes are given by the demand equation p(x) = 100e^-0.0001x f or 0 _< x _< 20,000 a. Find the revenue function,R. (Hint: R(x)= x(p(x)), since the

asked by Tima on April 11, 2013
71. ## Calculus

The unit selling price p (in dollars) and the quantity demanded x (in pairs) of a certain brand of women’s shoes are given by the demand equation P(x) = 100e^-0.001x f or 0 _< x _< 20,000. a. Find the revenue function, R. (Hint: R(x) = x(p(x)), since the

asked by Wiz on April 12, 2013
72. ## Calculus

A company is increasing production at the rate of 25 units per day. The daily demand function is determined by the fact that the price (in dollars) is a linear function of q. At a price of \$70, the demand is 0, and 100 items will be demanded at a price of

asked by John on April 6, 2010
73. ## Algebra

You operate a gaming Web site, where users must pay a small fee to log on. When you charged \$3 the demand was 520 log-ons per month. When you lowered the price to \$2.50, the demand increased to 780 log-ons per month. (a) Construct a linear demand function

asked by Erin on February 21, 2012
74. ## Math - Limits/Derivatives

If a price-demand equation is solved for p, then price is expressed as p = g(x) and x becomes the independent variable. In this case, it can be shown that the elasticity of demand is given by E(x) = - [g(x) / xg'(x)]. Use the given price-demand equation to

asked by Jess on October 19, 2013
75. ## Statistics

a) What is sampling with replacement? (b) What is sampling without replacement? c) How does sampling without replacement affect the probability of events, compared to sampling with replacement?

asked by Anonymous on February 16, 2014
76. ## Math

Supply function 300_p2+29=0. Demand function p2+4q=16. Find the equilibrium price

asked by Chiamaka on March 26, 2019
77. ## statistics

supply function p = 15x-900 demand function p = 2x + 530 find the point of equilibrium

asked by Wayne on September 20, 2013
78. ## Math

A company is increasing production at the rate of 25 units per day. The daily demand function is determined by the fact that the price (in dollars) is a linear function of q. At a price of \$70, the demand is 0, and 100 items will be demanded at a price of

asked by Alex on April 6, 2010
79. ## Chemistry

I need some help with net ionic equations. I can do single replacement, double replacement, etc., but I don't get stuff like gas forming-reactions or the trends when stuff like a strong acid and water are the reactants. Examples: 1. Moist sodium hydroxide

asked by Nikki on November 7, 2009
80. ## calculas for economics

If the demand function=9000-30p and the cost function=90000+30x then find break even point

asked by ibsaa on November 14, 2017

3.) The demand equation for a certain product is q=500-40p+p^2 here p is the price per unit (in dollars) and q is the quantity of units demanded (in thousands). Find the point elasticity of demand when p = 15. If this price of 15 is increased by 1/2%, what

asked by pypski on December 15, 2016
82. ## economics

demand function of a monopolist is given as Q=50 - 0.5p while the cost function is given as C= 50 + 40q. calculate equilibrium quantity and profit maximizing output.

asked by kazeem on April 2, 2019
83. ## Microeconomic

1. Supply and Demand. Elasticities. Suppose you have the following information about the supply and demand in the market: QD = 15000 – 500*P QS = -6000 + 3000*P a. What is the equilibrium price and quantity? b. What would be the combination of price and

asked by Kimi on September 25, 2018
84. ## Micro Economics

Briefly explain the following: (a)Economic cost and accounting cost. (b)Free market economy and mixed economy. (c)Marginal utility theory and indifference curves analysis. Please note that we don't do students' homework for them. Once YOU have come up with

asked by Christine on March 23, 2007
85. ## math

Data were recorded for the demand and revenue of a given product. Find the linear regression line which represents the revenue function. Find the quadratic regression curve which represents the revenue function. Data Demand x Revenue y 1 0 100 2 4 139.2 3

asked by Jake on October 15, 2014
86. ## College Algebra

Hello - I am stuck on this problem and I'm in serious need of some help. I don't understand this question at all. The problem is: Find the equilibrium quantity and equilibrium demand function for the given: Supply: P=45q Demand: P=q^2+10,000

asked by Jessica on February 9, 2013
87. ## math

The demand function for a certain commodity is approximated by: p = 100e-q/2where "q" is the number of units demanded at a price of "p" dollars per unit. If there is no demand for the product, what will its price be(in dollars)?

asked by tanya on April 3, 2012
88. ## Economics - Cournot Model

There is one firm with a marginal cost of 0. It's monopoly price is 10. Another firm enters, also with zero marginal cost. Using the Cournot model, would would the new oligopoly price be? Can this question be answered without more information about the

asked by Jennifer on January 26, 2007
89. ## Calculus

DEMAND FUNCTION: p = 492-0.15x^2 COST FUNCTION: C = 920+87x Find the number of items (x) that will produce maximum profits.

asked by John on November 4, 2009
90. ## Micro econ

1: Suppose John had a utility function of U=X^2/3Y^1/3 . Derive Johns demand function from his utility function showing all the necessary steps. i know that the MUx=MUy and first i derive the equation to 2/3X^-1/3 1/3Y^-2/3 then im stuck i need help with

asked by Brett on September 18, 2007
91. ## chemistry

For each of the following chemical reactions: a.)classify the reaction as combination, decomposition,single replacement, or double replacement. b.)complete the word equation. c.)using the formulas for both reactants and products, balance the chemical

asked by Yeah on September 23, 2008
92. ## pre-calculus

You are given a pair of equations, one representing a supply curve and the other representing a demand curve, where p is the unit price for x items. -45 x^2 - 74.5199999999995 x + 15921.36 - 1224.72 p = 0 and 54 x^2 + 1743.12 x + 13880.16 - 6940.08 p = 0

asked by Irina on October 14, 2014
93. ## managerial economics

firms demand function,p=24-0.54q and the average cost function,AC=Q2-8Q+36+3/Q,calculate the level of output Q, which maximize total revenue,maximizes profits

asked by kala on October 19, 2010
94. ## chem

I have to balance an equation and I had to make the equation from an experiment we did. So far, my equation looks like this and I know what I have is correct: Cu(NO3)2+H20+NaOH----->Cu(OH)2 I think I probably need an N or a Na on the right side. What do

asked by Abby on March 5, 2007
95. ## Economics

Aggregate demand is the total demand in our economy as it is made up of many different components. In our economy, you will find that changes in the aggregate demand will affect both consumers and businesses. What are the major challenges of these changes

asked by Tommie on October 19, 2018
96. ## calculus

(1 pt) A new software company wants to start selling DVDs with their product. The manager notices that when the price for a DVD is 15 dollars, the company sells 132 units per week. When the price is 27 dollars, the number of DVDs sold decreases to 84 units

asked by mae on October 12, 2010
97. ## math

A new software company wants to start selling DVDs with their product. The manager notices that when the price for a DVD is 20 dollars, the company sells 139 units per week. When the price is 34 dollars, the number of DVDs sold decreases to 91 units per

asked by kim on October 8, 2010
98. ## math

A new software company wants to start selling DVDs with their product. The manager notices that when the price for a DVD is 20 dollars, the company sells 139 units per week. When the price is 34 dollars, the number of DVDs sold decreases to 91 units per

asked by kim on October 10, 2010
99. ## calculus

(1 pt) A new software company wants to start selling DVDs with their product. The manager notices that when the price for a DVD is 15 dollars, the company sells 132 units per week. When the price is 27 dollars, the number of DVDs sold decreases to 84 units

asked by mae on October 13, 2010
100. ## math

A new software company wants to start selling DVDs with their product. The manager notices that when the price for a DVD is 20 dollars, the company sells 139 units per week. When the price is 34 dollars, the number of DVDs sold decreases to 91 units per

asked by kim on October 10, 2010