Question

Let f(x) = x2 − 8x + 5. Find f(−1). (1 point)

−4

−3

13

14

Answer 1

f(x) = x² - 8x + 5 Plug in -1 for all of the x-values
f(-1) = (-1)² - 8 (-1) + 5 Square -1
f(-1) = 1 - 8 (-1) + 5 Multiply -8 and -1
f(-1) = 1 + 8 + 5 Add
f(-1) = 14