A fitness center charges a membership fee plus a fixed amount per day for each day the center is used. If Claire paid $68 for 22 days of use, and Adrian paid $71 for 24 days of use, how many dollars is the membership fee?
+36916 F = 24d = 71
F + 22d = 68 Subtract this equation from the first
2d = 3
d = 3/2 = $1.50 / day now use this value of 'd' in either one of the equations to compute 'F'
