# math correction

can someone correct this for me.Also do i have to solve it all the way or what does it mean by inequality form.

Business and finance. The cost for a long-distance telephone call is \$0.36 for the first minute and \$0.21 for each additional minute or portion thereof. Write an inequality representing the number of minutes a person could talk without exceeding \$3.
Let x = be the number of minutes:
The first minute cost \$0.36
The remaining x –1 minutes cost \$0.21 each
So the remaining x- 1 minutes altogether costs \$0.21 (x – 1)

Total cost = \$0.36 + \$0.21 (x – 1)

This must be less than or equal \$3.00. So we have:
\$0.36 +\$0.21 (x- 1) <= \$ 3.00
Multiply through by 100 and drop the \$’s
36 + 21(x –1)<= 300
12 + 7 (x –1) <=100 (In this step in order to get this equation I had to divide both sides by 3 to make the numbers smaller.)
12 + 7x – 7 <= 100
7x + 5 <= 100

1. 👍 0
2. 👎 0
3. 👁 66
36 + 21(x –1)<= 300 is the answer to writing an inequality representing the number of minutes a person can make with 3 bucks.

1. 👍 0
2. 👎 0
2. i need help on correcting my work

1. 👍 0
2. 👎 0
posted by vanessa
3. The melt in your mouth chocolate factor opens its doors each day at 7:00am sharp. Sally arrived at the factory 10 minutes before the door opened. Luke got their 18 minutes after sally, but 4 minutes before Michelle. At what time did Michelle arrive at the factory?

1. 👍 0
2. 👎 0
posted by cooi16
4. write 5760 as a product of primes

1. 👍 0
2. 👎 0
posted by kyle
5. 200 with radical sign is approximately 100

1. 👍 0
2. 👎 0
6. \$443

1. 👍 0
2. 👎 0
posted by jessan
7. The price of a wrist watch is\$575.00 subject to 15% V.A.T
calculatethe 50 percent fat on wrist watch.
calculate the vat inclusive price of the wrist watch

1. 👍 0
2. 👎 0
posted by jessan

## Similar Questions

1. ### Algebra

1.Solve (x)/(x+10)+(x-3)/(x+2)=7/5..I got that there is no solution, is that correct? 2. Solve (x)/(x-5)+1=(5)/(x-5)..I got that there is no solution for this one too, is that correct? 3. Express your result in simplest form,

asked by Helpless in Math on May 27, 2007
2. ### Calculus - Seperable Equations

Solve the separable differential equation (dy/dx)=y(1+x) for y and find the exact value for y(.3). dy/dx = y(1+x) dy/y = (1+x)dx Integral (dy/y) = Integral (1+x)dx ln (y) = x + (1/2)x^2 + C y = e^(x + (1/2)x^2 + C) y(0.3) =

asked by COFFEE on June 26, 2007
3. ### Math

T=10d+20 Solve for d. I got T/10-2=d Is this correct? and.... L=9.2+0.17m Solve for m round to nearest hundreth or tenth. I got L/0.17-54.1=m Is this correct? thanks for replying.

asked by Larry on September 29, 2008
4. ### Algebra 2

1. Solve the following for x. 3-(x+(-4))= 2x-6+5x I figured that the answer is no solution. Is this correct? I have been working with my friend on this next problem and neither of us know which is correct. 2. Solve for r.

asked by Christian on August 30, 2007
5. ### Algebra

I'm not sure if I have this correct I have to solve each literal equation for the indicated variable. A=1/2h(B+b)variable is (b). I have the answer as: 2A=h(B1+b2) 2A/h=B1+b2 (2A/h)-b2=B1 Is this correct? weren't you supposed to

asked by ms jay on August 9, 2007
6. ### math 115

1. Nina's car payment is \$362.57 per month for 4 years. how much will she pay altogether? \$17,401.92 is this correct? 2. solve the unknown. 4/X= 3/15= 60/X is this correct? 3.write 2/5 as a percent. = 40% is this correct? 4. write

asked by Lea on September 5, 2009
7. ### Math

Solve the system by addition or substitution. 3x – 4y = 8 6x – 2y = 10 Please get me on the correct track for 3x -4y =8 x=4, y=1 for 6x - 2y =10 x= 2, y= 1 Solve one equation for x. 3x = 4y + 8 x = (4y + 8)/3 Insert that value

asked by Amanda on May 20, 2007
8. ### compound inequality

olve. State the solution set using interval notation and graph it 1/3x > 2 and 1/4x > 2 First should I solve for x. How would you handle this problem? yes, solve for x in each.. x>6; x>8 so if the second condition is met, that is

asked by Telli on August 16, 2007
9. ### Pre-Cal

1)find f(g(x)) f(x) = x^2 + 2x g(x) = 1/x x^3 + 2x Is this correct? 2) solve: 3^x-1 = 10 ln 3/ ln 10 = .264 Is this correct? I am not sure how to do these. 3) Solve: 3^x+2 - 4 = 12

asked by Hannah on March 15, 2010
10. ### Math

Solve the equation. 1. 999 + k = 1,721 (1 point) k = 2,720 k= 822 k = 722 k = 732 Solve the equation. 2. f + 523.89 = 812.57 (1 point) f =1,336.36 f =1,336.46 f =299.68 f =288.68 Write and solve an equation for the situation. 3.

asked by kikikikikiikikikiki on October 8, 2019
11. ### Math!

I need help figuring out equations for a math problem. This is the question: For a chemistry experiment Marie needs 300 ml of a 15% acid solution. The Science Department has quantities of 5% acid solution and 20% acid solution.

asked by Temp on December 10, 2018

More Similar Questions