A painting is purchased as an investment for $200. If its value increases continuously so that it doubles every 5 years, then its value is given by the function V(t)=#200*2^(t/5)# for t #>=0# ?

where t is the number of years since the painting was purchased, and V (t) is its value (in dollars) at time t. Find V(10) and V (15).

Ask for:
a). V(10)=
b). V(15) =

Thank you