Question: let fxx21 and gx2x3 evaluate the following a f1 ...

Let f(x)=x^2−1 and g(x)=2x+3, evaluate the following. a. f(−1) = Correct b. f(−2)+g(−4) = Correct c. 3f(x)+g(x) = Incorrect d. f(g(3)) g(f(3))