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

Question

Mathematics

Brogan Mills

30 December, 13:17

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

+3

Answers (2)

Know the Answer?

Geovanni Owens · Answer 1

Answer is

B. y = 30x + 50

cause

monthly service charge of $30 means $30 charge each month for x months.

and 50 is one time charge for the phone

and the total cost y after x months

Everett Barker · Answer 2

To find total, we'll need to add all the costs! There's the cost for the phone which is paid once, monthly fee for all the months you use it.

total = 50 + (30 * months)

In this case, the question wants the equation in x and y, so we can plug those in:

y = 50 + 30x