## The phone company A Fee and Fee has a monthly cellular plan where a customer pays a flat monthly fee and then a certain amount of money per

Question

The phone company A Fee and Fee has a monthly cellular plan where a customer pays a flat monthly fee and then a certain amount of money per minute used on the phone. If a customer uses 110 minutes, the monthly cost will be $59. If the customer uses 600 minutes, the monthly cost will be $157. A) Find an equation in the form y

in progress
0

Mathematics
2 days
2021-07-22T14:44:02+00:00
2021-07-22T14:44:02+00:00 1 Answers
0 views
0
## Answers ( )

Answer:

y = 0.2x + 37

Step-by-step explanation:

A) Find an equation in the form y = mx + b, where x is the number of monthly minutes used and y is the total monthly of the Ringular plan.

(x, y) = (minutes, cost)

(110, 59)

(600, 157)

slope = m = dy/dx

dy/dx = change in y/change in x

m = dy/dx

m = (157 – 59)/(600-110)

m = 98/490

m = 0.2

a) the linear equation:

y – 59 = 0.2(x – 110)

y – 59 = 0.2x – 22

y = 0.2x – 22 + 59

y = 0.2x + 37