Question

Talk Time Phone Company charges $0.12 per minute of phone use plus a monthly service fee of $8.00 for its phone service. The equation below can be used to find c, the total cost for one month when m minutes are used. If a customer’s bill for the month is $38.00, how many minutes did the customer use the phone?

Answer 1

Take the total price - rate . 0.12

38 - 8 = 30 / 0.12 = 250 <- The customer used 250 mins.

Hope I helped :)