Question

A cell phone company charges $50 for the phone plus a monthly service charge of $30. The equation below describes the total cost y after x months. Which equation below best describes this situation? (A) y = 50x + 30 or (B) y = 30x + 50 or (C) x = 50x + 30 or (D) x 30x + 50

Answer 1

The answer is cost = 50 + 30x

Answer 2

The answer is (B) y = 30x + 50

Reason:
The phone charges $50 so there's 50. Then, it says there a monthly service charge of $30, and x months have passed, so there's 30x. Therefore, the cost (y) = 30x + 50.
I hope this explaination helped.