Estimate the final position using the given velocity function and initial position.

v(t) = 30e^{-t/4 }, s(0) = -1, b = 4

I have been looking in my book and it is of no help really. Only two examples in their and not even really close to explaining what I am supposed to do. Any help is appreciated.

P.S. Hopefully ya'll do not get tired of my constant barrage of questions.