Science:Math Exam Resources/Courses/MATH110/April 2019/Question 01 (h)/Hint 2

We are given the function $P(t)=40e^{0.2t}$, which describes the number of fish in a pond at time $t$. The rate of change of the number of fish in a pond at time $t$ is given by $P^{'}(t)$. Calculate the derivative of $f$!