Question

A fitness center has two membership plans. One has low dollar sign up fee of 15 dollars and cost 38 dollars a month to join. A second plan is a higher sign up fee of 78 dollars and a low monthly fee of 31 dollars. For what number of months coat the same ?​

Answer 1

The number of months cost same is 9

Explanation:

Given:

Equation for the first plan y = 38x + 15

Equation for the second plan y = 31x + 78.

where x is the number of month

Solution:

38x + 15 = 31x + 78

7x + 15 = 78

7x = 63

x = 9