3rd time asking someone please help

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

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?

Part 1: use the graph to count the slope of the line that passes through the points (2,1) and (2,0).part 2 in two or more complete sentences,explain why it is not possible to write the equation of the given line in the traditional version of the point-slope form of a line