Charlene's long-distance telephone service charges $7.50 per month plus $0.12 for each minute. Her bill last month was $13.02. What equation represents the amount of her last bill, and how many minutes did Charlene use last month?

7.50 + 0.12x = 13.02

Charlene spent 46 min on the phone last month

Step-by-step explanation:

First you would do 13.02 - 7.50 = 5.52

Secondly you would do 5.52/0.12 = x

this will give you x= 46

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation:

jeff jeff

step-by-step explanation: