Easy# Average Velocity of a Particle

APCALC-VZG3DJ

The velocity, in feet per second, of a particle moving along the $x$-axis is given by the function $v(t)=4e^{-t}+\frac{1}{2}t^{2}$.

What is the average velocity of the particle from time $t = 0$ to time $t = 4$?