Find and simplify the difference quotient for f(x) = x-7
(I honestly have no idea what that question is asking for?)
2. Find (h o g)(2) for g(x)=-3x , h(x)= x^3-2
Not precisely. Certainly to do that you would need to find the "difference quotient" but it is possible to find the difference quotient ("average rate of change") without taking the limit or finding the derivative. Often such a problem is given as a prelude to introducing the derivative.