Question

Find the derivative of f(x) = 8x + 4 at x = 9. (6 points)

Answer 1

f(x) = 76

Explanation:

All you do is plug-in for x: (x = 9)

f(x) = 8x + 4

f(x) = 8(9) + 4

f(x) = 72 + 4

f(x) = 76