CAN SOMEBODY GIVE A QUICK ANSWER

Based on what i know about mean, this doesn't add up.

Suppose that f(0) = −3 and f '(x) ≤ 8 for all values of x. how large can f(4) possibly be? solution we are given that f is differentiable (and therefore continuous) everywhere. in particular, we can apply the mean value theorem on the interval [0, 4] . there exists a number c such that

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length