A neighborhood swim club charges a one-time fee of $25 to join and $85 each month. If n is the number of months of membership and t is the total amount spent, then the variables are related by the equation t = 85n 25. Which variable is the independent variable?

Question

A neighborhood swim club charges a one-time fee of $25 to join and $85 each month. If n is the number of months of membership and t is the total amount spent, then the variables are related by the equation t = 85n  25. Which variable is the independent variable?
 
A.t
B.n
C. There is no relationship between the variables. (MY ANSWER)

Reiny · Answer

your equation should read:
t = 85n + 25

Doesn't the value of t "depend" on what you put in for n ??
So t would be the "dependent" variable, so that implies that .......

your choice of answer makes no sense.
You mean to say that the total t is not affected by the number of months involved?
Bet you that club won't last long.