Use the given function f(x) = (x-4) +8x to solve f(-2) A. 18 B. 14 C. 22 D. -22

asked May 15, 2017 65.0k views

4 votes

Use the given function f(x) = (x-4) +8x to solve f(-2)

A. 18
B. 14
C. 22
D. -22

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4 votes

we just need to substitute the x by -2 in the function:
f(x) = (x - 4) + 8x
f(-2) = (-2 - 4) + 8(-2)
f(-2) = (-6) - 16
f(-2) = -6 - 16
f(-2) = -22

Kathick answered May 21, 2017

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