To join a video rental club, a member pays an initial fee plus an additional monthly cost. The equation below describes the relationship between x, the number of months a member rents videos, and y, the total cost in dollars.
y=15+20x
What is the meaning of the rate of change for the equation?
A.
It means the cost per month is $15.
B.
It means the initial fee is $20.
C.
It means the cost per month is $20.
D.
It means the initial fee is $15.
