# find the derivative of y=(3x+1)^2 y= square root 13x^2-5x+8

97,722 questions, page 104-
## algebra

The length of the sides of a square measures 2x-5. The length of a rectangle measures 2x and the width measures x+2. For what value of x is the perimeter of the square the same as the perimeter of the rectangle.

*asked by Anonymous on January 19, 2012* -
## algebra.....

N is a 3-digit number that is a perfect square. When the first digit is increased by 1, the second digit is increased by 2, the third digit is increased by 3, the result is still a perfect square. Determine N.

*asked by can u please help me! on February 18, 2013* -
## Algerbra

The U.S. population in 1990 was approximately 250 million, and the average growth rate for the past 30 years gives a doubling time of 66 years. The above formula for the United States then becomes P (in millions)= 250 x 2( y-1990)/66 1.What was the

*asked by Angela on June 28, 2007* -
## dma 040

area of a certain state (state1) five times the area of another state(state2). If the sum of their area is 6,000,000 square miles, find area of each state

*asked by Anonymous on September 14, 2013* -
## calculus verify answer

Evaluate the limit: Limit as x approaches 6 from the right: Sq.root of (x - 6). I know the limit is 0, but how do I show this? Thanks in advance.

*asked by Anonymous on June 15, 2010* -
## Calc

y= cube root (1+tan(t)) OR y= (1+tan(t))^(1/3) The answer I got was y'= (1/3)(1+tan(t))^(-2/3)*(sec^2(t)) Is this correct?

*asked by Checking answer on October 19, 2010* -
## calculus

v(t)= Ce^(k(square root(t)) Suppose that the dealer, who is 25 years old, decides to sell the card at time , sometime in the next 40 years: 0< or equal to t < or equal to 40. At that time , he’ll invest the money he gets for the sale of the card in a

*asked by lyna on May 23, 2012* -
## College Algebra

The area of a rectangular carpet is 12 square feet. The length is four feet more than the width. Find the length and the width of the carpet.

*asked by Keonn'a on October 4, 2017* -
## Geometry

The height of a parallelogram is 5 feet more than its base. If the area of the parallelogram is 204 square feet, find its base and height.

*asked by Eddie on March 6, 2013* -
## math

THe width of a garden is 8 feet less than the length. If the area of the garden is 20 square feet, find the length and the width. could someone work this for me. I have but not right.

*asked by Keaton on May 18, 2010* -
## Geometry

The height of a parallelogram is 10 feet more than its base. If the area of the parallelogram is 120 square feet, find its base and height.

*asked by Derek on April 18, 2012* -
## calculus

i understand optimization but im stuck on this problem.. mrs.day is building a new deck. she has 580 square feet to enclose. if one side is bounded by a wall, find the minimum cost to build the deck if one pair of opposite sides cost $12 per foot and

*asked by tiana on January 2, 2011* -
## PHYSICS

The surface area A of a sphere of radius R is given by the equation A = 4pi*R2, where pi equals 3.1416 (to 5 digits). Calculate the area of a sphere which has a radius of 2 m. If 2600 grains of sand are uniformly spread out on the surface of the sphere,

*asked by Anonymous on October 2, 2018* -
## Math

Mr. Frank is shopping for carpet for his living room and dining room. The living room is 20 feet by 16 feet and the dining room is 11 feet by 10 feet. He looked at two differently priced carpets. One for $14.99 a square yard installed and another for

*asked by Miranda on September 17, 2012* -
## maths

how do i find out the the equation of the line of symmetry for f(x)=ax^2+bx+c ? please explain it do me thanks! The line of symmetry runs through the vertex. so the x of the vertex is -b/(2a) and the equation of the line of symmetry is x = -b/(2a) e.g. for

*asked by Emma on May 25, 2007* -
## pre-calc

"An open gift box is to be made from a square piece of material by cutting 2 centimeter squares from each corner and turning up the sides. The volume of the finished gift box is to be 200 cubic centimeters. Find the size of the original piece of material."

*asked by kari on October 30, 2011* -
## math

Saying that 4

*asked by Cliff on July 26, 2010* -
## math

determine the equation of the image y = root x in each case a) its graph is compressed horizontally by a factor of 1/4 b)its graph is expanded vertically by a factor of 2

*asked by Anonymous on September 15, 2008* -
## Vocabulary latin and greek

write a word with the latin or greek word parts below. latin root bene, which means "good" with the suffix- diction___________ thanks

*asked by doris on April 28, 2009* -
## Math: Multistep area problems

Mark is covering an 8-inch-square board with 1-inch-square tiles. He uses gray tiles to make four 2-in. by 2-in. squares. He covers the rest of the board with white tiles. How many more white tiles than gray tiles will Mark use?

*asked by Mandy on June 2, 2016* -
## Biology

I am lost in this Genetics Maze. Here is my assignment: Write out a cross using genotypes as parents Determine Possible Gametes that may be formed Use a Punett Square to establish the genotypes of all possible progeny. Determine the Genotype Ratio of the

*asked by gjet on June 25, 2007* -
## 5th grade math

Kallisto built a rectangular sign that measured 2 3/4 feet in length by 1 1/2 feet in width. To find the area, multiply the length and width. what is the area of the sign in square feet? Write an equation to solve. 2 3/4 1 1/2 +2 3/4 1 1/2 =11/1/2 ------

*asked by Beverly on March 5, 2015* -
## College Algebra

1.Use completing the square to describe the graph of the following function. Support your answer graphically. f(x) = -2x^2 + 4x + 5 2. Find the vertical, horizontal, and oblique asymptotes, if any, for the following rational function. R(x) = 5x/x+7 The

*asked by Kameesha on August 3, 2012* -
## College math

Which statement describes the quadratic equation 6x^2-4x+1=0,correctly? A. it is one completed real root? B. It is two complete complex roots? C. It is two unequal real roots? Please help me with this

*asked by Cassandra on March 17, 2014* -
## st anthenis physics

A+B+C=0out of three vector two r equal in magnitudeand magnitude of third is root 2times that of eitherof two hsving equal magnitude.than angle beteen vectors r

*asked by rashika on May 14, 2014* -
## linear approx

I have no idea how to do this, anyone have any hints? Use linear approximation, i.e. the tangent line, to approximate as follows: cubed root 63.6 The equation of the tangent line to at f(x) x=64 can be written in the form y= thanks

*asked by emily on March 28, 2007* -
## geometry

In the diagram, circle A is tangent to circle C, and segment BE is tangent to circle A. The radius of circle A is 11 meters and the radius of circle C is 8 meters. Find the area of triangle ABE to the nearest square meter.

*asked by joe on April 4, 2013* -
## Algebra

x^3-2x^2-9x-2 is greater than or equal to -20. I got (-9+x^2)(x-2)(x-2). That would mean for the first grouping, the answer would be -3 or 3. My book listed them separately. Could I instead go +/- 3? I then got double root of two. But my book says the

*asked by Devon on October 14, 2009* -
## Algebra 2

Provide an appropraite response. If y varies inversly as the 4th power of x and y=3 when x=2, what is y when x=0.5? If Q varies inversly as the sqaure root of R and Q=2 whe R=4, what is Q when R is 25?

*asked by CC on July 6, 2011* -
## Calc 2

Use the ratio or the root test to determine the convergence of the series: Sum of infinity and n=1 of arctan(e^-n), Sum of infinity and k=1 of sqroot(3^k)/(2^k)

*asked by Bae on April 6, 2014* -
## English

Help please! Numerous English words have a root and an affix. Do you think that the availability of affixes means there are more or fewer words in the English language

*asked by Regina on September 27, 2018* -
## Algebra

The equation x^2+px+q=0, q cannot be equal to 0, has two unequal roots such that the squares of the roots are the same as the two roots. Calculate the product pq. I think the obvious root would be one but the second roots i just can't figure out!

*asked by Ricky on October 20, 2011* -
## geometry

DIAGRAMS ARE HERE: type filedropper . c o m /diagrams (in .zip file) 1. which solid has two bases that are triangles and three lateral surfaces that are rectangles a. triangular pyramid b. rectangular prism c. triangular prism *** d. rectangular pyramid 2.

*asked by anon6666 on May 23, 2016* -
## Math

The electrical resistance of a wire waves directly as its length & inversely as the square of its diameter if a wire 30m long and 0.75mm in diameter has a resistance of 25ohms , find the length of a wire of the same material whose resistance is 30ohms

*asked by Helena on January 29, 2016* -
## math

2/3x+5/3x=14 7\6x=14 then multiply a4 my 6\7 what is the circumferenceof a satellite dish which has a diameter of 21m you do 2 times pie and radius since you have the diameter then its 21 times pie . for futher info if your trying to find the area then you

*asked by Anonymous on April 24, 2007* -
## Mechanics

A blade is fixed to a rigid rotor of radius R spinning at ωrad/s around the vertical z-axis (see figure). Neglect the effects of gravity. The x-axis rotates with the blade, and the origin x=0 of the axis is located at the "root" of the rotating blade

*asked by Tony on October 23, 2017* -
## Prealgebra

It is recommended that for every 8 square feet of surface, a pond should have 2 fish. A pond that has a surface of 72 square feet should contain how many fish?

*asked by Mexdaughter on September 5, 2016* -
## geometry

the area of a pool is 12 square units and the area of the walkway around the pool is 60 square units, what is the perimeter of the walkway?

*asked by emily on October 30, 2014* -
## calc

what is the derivative of sinx- cosy = 0 in its simplest form? I got to the point y'=-consx/siny, but I wasn't too sure. This could probably simplified further. help! You're supposed to treat y as a function of x and differentiate it implicitly. We have

*asked by lil on September 27, 2006* -
## math

a rectangular garden with an area of 2112 square feet is to be located next to a barn with fencing on three sides and the barn acting as the fourth side.Write a function that gives the length of fencing needed if the length of the side parallel to the barn

*asked by Anonymous on April 23, 2013* -
## Algebra

Which equation could be used to find the dimensions of a room that has a length of 8 feet longer than the width, x, and has an area of 240 square feet? (A) x squared - 8x + 240 = 0 (B) 2x(2x-8x+16)=240 (C) x squared + 8x + 240 = 0 (D) x squared + 8x - 240

*asked by Anonymous on May 4, 2008* -
## Pre-Calc

The intensity I of light received from a source varies inversely as the square of the distance d from the source. If the light intensity is 5 foot-candles at 17 feet, find the light intensity at 16 feet.

*asked by Lily on October 5, 2017* -
## Math

The side of a square flower bed is 1.5 m long.It is Enlarged by digging around 25 cm wife strip all around outside it . Find the area of the Enlarged flower bed and also the increase in area of the flower bed.

*asked by Rajan on January 18, 2018* -
## Math (Area of Shapes)

Suppose that when pizza dough is rolled out it costs 25 cents per square foot, and that sauce and cheese when spread out on a pizza have a combined cost of 60 cents per square foot. Let's say sauce and cheese are always spread out to within 1 inch of the

*asked by Chelsea on October 28, 2012* -
## Business math

PROBLEM 1 The video discusses the requirements of a package to qualify as freight. A package must weigh at least 151 pounds. It must be palletized, stackable, forklift-friendly and shrink-wrapped or banded for stability. The uniform cargo footprint can be

*asked by maggie on April 11, 2013* -
## Physics

A rocket in a fireworks display explodes high in the air. The sound spreads out uniformly in all directions. The intensity of the sound is 2.89 x 10-6 W/m2 at a distance of 127 m from the explosion. Find the distance (in m) from the source at which the

*asked by Jena on December 5, 2006* -
## Unit 4 Lesson 5: Cool Crafts Portfolio

Choose a room you'd like to decorate: *I chose my bedroom* Measure the length of one wall in inches: 72in. 2. Choose a size of paper to use. *I recommend the standard 8.5in by 11in paper* Then fold it diagonally and cut it to make a square. *Once you cut

*asked by Anonymous on November 7, 2016* -
## Calculus - Approximation

Use linear approximation, i.e. the tangent line, to approximate cubed root { 1.1 }. The equation of the tangent line to f(x) at x = 1 can be written in the form y = mx+b. Show your work. Do not use a calculator.

*asked by James on October 7, 2016* -
## ms.sue 5 grade math

1-Becky made 4 quarts of chicken noodle soup in a big pot, then served -cup bowls of soup to 6 people. How much soup is left in the pot? (1 qt = 4 c) A. none B. 1 qt 3 c C. 1 qt 1 c D. 3 c my son put answer (B) 2- A bedroom has the dimensions shown. What

*asked by dw on March 27, 2012* -
## Biology

27. Part A. Make a punnett square (as best as you can in this online format) and cross parents both with the thumb genes Aa (A=normal thumb, a=hitchhikers thumb) and show the results. (1 pt) A a A AA Aa a Aa aa 27 Part B. (1 pt) Approximately what

*asked by Zoi on January 26, 2017* -
## mace

Simplify each expression using the rules of exponents and examine the steps you are taking.Incorporate the following five math vocabulary words into your discussion. Product rule Principal rooot Quotient rule Reciprocal nth root (a^1/2 b) ^1/2 (ab^1/2)

*asked by Anonymous on March 13, 2013* -
## Algebra

Solve the given polynomial equation. Use the Rational Zero Theorem and Descartes's Rule of Signs as an aid in obtaining the first root. 2 x cubed minus 5 x squared minus 5 x minus 1 equals 02x3−5x2−5x−1=0

*asked by Karla on November 11, 2016* -
## Math

Determine whether each statement is always, sometimes or never true. _____ 16. A rhombus is a parallelogram _____ 17. A parallelogram is a rhombus _____ 18. A trapezoid is a rectangle _____ 19. A square is a rectangle _____ 20. A rectangle is a square

*asked by Barry Vacker on March 5, 2019* -
## physics

the speed of pendulum is under root 0.91 and time period 1.8 sec what will be its time period in initial frame of reference

*asked by ali on August 1, 2014* -
## Math

the length of a rectangle is three times of its width. if the length of the diagonal is 8 root 10cm then the area of the parameter of the rectangle ?

*asked by Ashu on July 29, 2015* -
## Pre calc

sin(θ − ϕ); tan(θ) = 5/12 θ in Quadrant III, sin(ϕ) = − sqaure root 10/10 ϕ in Quadrant IV I tried this numerous times can somone please help me

*asked by Rachel on April 12, 2017* -
## Math

Show that cos x +cos(x+60)=3/5[1+root 3]

*asked by Steph on February 20, 2013* -
## math

Sina+cosa=root over cosA

*asked by prasenit on June 28, 2013* -
## math

Sina+cosa=root over cosA

*asked by prasenit on June 28, 2013* -
## Math

All these are either rectangles or squares 1.Rectangle. 5 is length and 10 is width 10x5=50 2.Square. 5 is length and 5 is width 5x5=25 3.Rectangle. 6 is length and 8 is width 8x6=48 4.Square. 10 is length and 10 is width 10x10=100 5.Rectangle. 40 is

*asked by Connor on January 18, 2012* -
## 5th grade (math)

The grass in Jenna's lawn has not grown in too well. She plans to throw more seed onto her lawn. A 1-lb bag of seed costs $22 and covers 60m square. A 5-lb bag of seed costs$88 and covers 300m square. how much will jenna spend on grass seed for her lawn?

*asked by ary on March 30, 2015* -
## physics

Water is flowing in a pipe with a circular cross-section area ,and at all point the water completely fills the pipe.At point 1 ,the cross sectiona are of pipe is 0.070 meter square and the fluid velocity is 3.50 meter per second. a.) what is the fluid

*asked by cathrena on January 10, 2017* -
## math

a rectangular parking lot has a length that is 10 yards greater than the width. the area of the parking lot is 200 square yards.find the length and the width

*asked by greg on February 5, 2011* -
## Pre-calculus

The area of a triangle wall on a barn is 160 square feet. Its length is 4 feet longer than twice the width. Find the length and width of the wall of the barn

*asked by Tamika on February 3, 2015* -
## math

The length, l, of a rectangle is 2 feet less than three times the width, w, of the rectangle. The area of the rectangle is 481 square feet. Find the length and width of the rectangle. how do i work this problem out?

*asked by Anonymous on October 16, 2009* -
## maths

A mixture contains two chemicals, A and B, with masses mA and mB. The total mass of the mixture, m, remains constant. B is converted into A at a rate that is inversely proportional to the mass of A and directly proportional to the square of the mass of B

*asked by jessie on March 9, 2010* -
## math

Ricardo wants to cover a 8" by 10" by 5" box with contact paper How many square inches of caontact paper will he need? How much ribbon will he need if the bow itself adds 15" just do l*W*H 8*10*5 then for the ribbon just add 15 to the solution of 8*10*5 =

*asked by Preston on January 22, 2007* -
## Physics

Four masses (2kg 3kg 1kg and 2kg) are arranged on a square of side 1.2 m. What is the moment of inertia if the axis of rotation is at the center of the square? What is the moment of inertia if you make the axis of rotation through mass 2kg (this mass

*asked by Sam on February 28, 2016* -
## Help me

11. Name the triangles that are classified by angles. right, scalene, isosceles scalene, isosceles, equilateral acute, right, obtuse obtuse, isosceles, acute 12. Classify the triangle by side length and angle measurement. scalene, acute isosceles, acute

*asked by Jman on January 31, 2013* -
## Math

What is the mathematical term for a statement that can be flipped and still remain true? Example: A cat is a feline, and a feline is a cat. AND/OR What is the mathematical term for a statement that becomes false when flipped? Example: A square is a

*asked by Christina on January 30, 2011* -
## indian ridian ridge

Simplify the given expression to rational exponent form and justify each step by identifying the properties of rational exponents used. All work must be shown. 1/cubed root of x to -6 exponent

*asked by dylan on March 7, 2015* -
## English

Quick questions about vocab, Insidious literally translates to "sitting in," but the word means "secretly working to cause harm." Explain the possible connection between the actual and literal definitions? Also, list as many words as you can think of that

*asked by Bryce on August 13, 2013* -
## social studies

Which statement is most clearly subjective? A. In my view, the data support the professor’s assertions. B. My common sense tells me that money is the root of all evil. C. Wars are fought over ideas, land, and resources. D. It has been suggested that Nero

*asked by phia on March 23, 2014* -
## math

jim has a box in the shape of a rectangular prism. The area of the base of the box is 48 square inches. The volume of the box is 144 cubic inches. Let h = the height of Jim's box. Write and solve an equation you can use to find the height of Jim's box.

*asked by haley on August 29, 2013* -
## Algebra 1

Just checking my answers. What is the sum or difference? 1. 2x^4 - 8x^4 A. -6x^8 B. -6x^4*** C. -16x^4 D. -16x^8 What is the sum or difference 2. 10y^10 - 14y^10 A. -4y^20 B. -140y^20 C. -140y^10 D. -4y^10*** 3. Write the polynomial in standard form. Then

*asked by Alyssa on October 24, 2016* -
## 8th grade Math

This four-leaf clover consists of four coplanar circles. Each circle is externally tangent to two others, as shown. The two smaller circles are congruent, and the two larger circles are congruent. A square is constructed such that each of its four vertices

*asked by Anonymous on March 17, 2011* -
## Chemisrty Lab

dimensions of a concrete pile are 14 inchesx14 inches x 15 feet. (1 meter=3.28 feet) the pile has 4 faces and 2 ends. 1>what is the surface area in square feet, of a single pile? exclude the ends of the pile. 2>What is the total surface area in square

*asked by NIcole on September 11, 2007* -
## Calculus

A rectangular page is to contain 8 square inches of print. The margins at the top and bottom of the page are to be 2 inches wide. The margins on each side are to be 1 inch wide. Find the dimensions of the page that will minimize the amount of paper used.

*asked by Bianca on May 7, 2017* -
## Intro to probability,

My main problem is deciding with discrete distribution to use: BERNOULLI, BINOMIAL, DISCRETE UNIFORM, GEOMETRIC NEGATIVE BINOMIAL, OR POISSON. Every time I choose one, it's the wrong one. Is there some way I can easily find out which one to use. Because

*asked by Amelie on March 7, 2008* -
## math

A jewelry box with a square base is to be built with copper plated sides, nickel plated bottom and top and a volume of 40cm^3. if nickel plating costs $2 per cm^2 and copper plating costs $1 per cm^2, find the dimensions of the box to maximize the cost of

*asked by Rajesh on December 15, 2015* -
## Algebra ( benchmark)

The Carlson family is building a house on a lot that is 91 feet long and 158 feet wide. A. Town law states that the sides of a house can't be closer than 10 ft to the edges of a lot. Write an inequality for the possible lengths of the Carlson family's

*asked by Anonymous on May 8, 2014* -
## maths (variation)

different questions pls! Very urgent! 1) the force E needed to make a machine pull,a load is partly constant and partly varies as the load to be pulled itself.when the load is 20g,the force needed is 1.4n,where as the force needed for 30g load is 2N. Find

*asked by chinaemerem on April 27, 2017* -
## CAlculus

The graph of the derivative, f '(x), is given. Determine the x-coordinates of all points of inflection of f(x), if any. (Assume that f(x) is defined and continuous everywhere in [-3, 3]. If there are more answer blanks than inflection points, enter NONE in

*asked by LC on November 29, 2011* -
## Differential Equation 4

A differential equation governing the velocity v of a falling mass m to air resistance proportional to the square of the instantaneous velocity is m dv/dt=mg-kv^2 where k>0 is a constant of proportionality. The positive direction is downward. (a)Solve the

*asked by ijat on April 6, 2015* -
## math

400 is a three-digit square number that makes a one-digit square number when its digits are reversed.How many three-digit squares are there which make three -digit squares when their digits are reversed

*asked by lian on May 19, 2013* -
## mathematical physics

Given two vector function vector a(t)=(2t+3)i^+(t^2-2)j^+tk^ and vector b(t)=(4-t)i^+(3t^3+1)j^+(2t-1)k^, determine the derivative of vector a(t).vector b(t) at t=1.

*asked by gourav on March 21, 2015* -
## Physics- sound

As the drawing shows, the length of a guitar string is 0.628 m. The frets are numbered for convenience. A performer can play a musical scale on a single string, because the spacing between the frets is designed according to the following rule: When the

*asked by Judy on June 18, 2007* -
## Math

The cost of hiring a chainsaw is 10$ plus an amount that is proportional to the square of the number of hours for which the chainsaw is hired. If it costs $32.50 to hire the chainsaw for 3 hours, find to the nearest half hour, the length of time for which

*asked by Aana on March 15, 2018* -
## Calculus AP Exam review explanation pls

1)What is the area bounded by y = x^2 and y =3x? A)5 B)9/2 ***C)8 D)11.2 E)25 i believe it to be 8 but im not sure. 2)The region R is bounded by the x-axis, x = 2, and y = x^2. Which of these expressions represents the volume of the solid formed by

*asked by ReviewDay :( on March 3, 2017* -
## math

On the set of axes below, graph the function represented by y=cubed root of x-2 for the domain -6< or equal to x< or equal to 10. x column I did -6, 1, 2 , 3 ,10 y column I did -2, -1, 0, 1, 2 Then I plotted these points. Is this correct? Thanks for

*asked by sara on May 20, 2017* -
## 2 questions?

What is the surface area of a sphere with a radius of 4 meters rounded to the nearest square meter? 50 m2 101 m2 201 m2 *** 268 m2 What is the volume of a sphere with a radius of 4 meters rounded to the nearest square meter? 67 m3 201 m3 268 m3

*asked by Anonymous on May 23, 2014* -
## Calculus

A car accelerates from rest at the rate of 1.4 + 3 (root)t mph per second for 4 seconds. How far does the car travel in those 4 seconds?

*asked by ANR on March 17, 2013* -
## algebra

using the rational root theorem to list all possible rational roots of the polynomial equation x^3-x^2-x-3=0 possible answers -3,-1,1,3 1,3 -33 no roots

*asked by jayson on November 12, 2012* -
## prefixes,suffixes,roots

do i type in the root word for example [agr] in the search bar and then the word that start with the 3 same letters in the word is the word i use to look up

*asked by Niqua on October 2, 2008* -
## psychology

1. Stress can be the root cause of psychological disorders. Name four symptoms shared by acute and posttraumatic stress disorders.

*asked by judyanne on April 29, 2011* -
## pre cal

Determine algebraically whether the function is even, odd, or neither even nor odd. f as a function of x is equal to 14 times the cube root of x

*asked by Jorgeeee on June 23, 2014* -
## Grade 8 SCIENCE

1. How is the vascular tissue in the stem different from the vascular tissue in the root? 2. Could you explain the relationships between seeds and fruits??

*asked by RAE on October 20, 2009* -
## calculus

solve for the second derivative and set to zero f"(x) = ((x^2-4)*sin(2x)- [(2x)(1+cos^2(x))]/ ((1+cos^2(x))^2) i don't know how to set it to zero and solve i get this: (x^2-4)(sin(2x))= (2x)(1+cos^2(x)) thanks for help i did not get a clear response

*asked by Ken on June 11, 2013* -
## Math

I'm doing some word problems on finding the areas of rectangles, its just like all complicated. I don't understand how to do them. For example: A square field had 3 m added to its length and 2m added to its width. The area is 90 m2(squared). Find the

*asked by Michelle on April 29, 2009* -
## math

q = 200 − 5 p What is the (instantaneous) rate of change of revenue with respect to price when the price is $ 12? At what price is the derivative of revenue with respect to price exactly zero?

*asked by isabella on October 13, 2010*

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