Hello! Please help me!

Question

I’m having trouble with this problem.

My cell phone company charges $49 per month plus $.10 per minute for long distance calls. Write an equation that represents the total cost C for x minutes of long distance calls. How many minutes of long distance calls can I make and stay within my limit of $80?

Answer 1

total cost of a call = 10x +49 per month, where x is the minutes of long distance calls made.

10x+49 <= 80, 10x <= 31, x <=3.1 minutes of long distance calls

Answer 2

Hello, thank you for taking the time to post your question!

Based on the information given in the question the underlying formula here would be

C = 0.10x + 49

Solving then for C = 80 gives

80 = 0.10x + 49

31 = 0.10x

x = 310

that means that you can make 310 minutes of long-distance calls and stay within the $80 limit.

I hope that helps get you moving in the right direction! Feel free to reach out if you have any additional questions beyond that :)

Answer 3

 Total cost (C) >= $49/month + $.10(x), where x is the number of long distance calls made.

C >= 49 + .1x if the total cost is limited or equal $80 then,

80>= 49 + .1x

Solve for x by subtracting 49 from both sides

31>= .1x

Divide both sides by .1

31/.1 >= x

310 minutes >=x

We can't exceed 310 minutes of long distance calls