Answer:

Explanation:
The correct question is
Find the cost of a membership as a function of the number of months as a member
Let
x ----> the number of months as a member
y ----> the total cost in dollars
we know that
The linear equation in slope intercept form is equal to

where
m is the slope or unit rate of the linear equation
b is the y-intercept or initial value of the linear equation
In this problem we have
The slope is equal to

The y-intercept is equal to

substitute
