Suppose g (x) is increasing and concave up everywhere and

g (A) = 9, g '(A) = 17, h = 0.01
estimate g(A-h)

2 answers

The anwser is actually 8.83 you just have to assume a value for A and then find the tangent line of g(A) and plug in the estimated values to get the anwser.
esghr