Which of the following options results in a graph that shows exponential growth
a) f(x)=0.4(0.2)^x
b) f(x)=4(0.98)^x
c) f(x)=0.7(5)^x
d) f(x)=5(4)-^x

Raymond just got done jumping at super bounce trampoline center. the total cost of his session was $43.25 . he had to pay a $7 entrance fee and $1.25 for every minute he was on the trampoline. write an equation to determine the number of minutes (t) that raymond was on the trampoline.