2 years ago

Given the definitions of f(x) and g(x) below, find the value of g(f(-1)).

Mathematics

1 answer:

Reptile [31]2 years ago

5 0

Answer:

-14

Step-by-step explanation:

$f(x) = -4x – 7 \\ plug \: x = - 1 \\ f( - 1) = - 4( - 1) - 7 = 4 - 7 = - 3 \\g(x) = x² + 7x – 2 \\g(f( - 1)) = {( - 3)}^{2} + 7( - 3) - 2 \\ = 9 - 21 - 2 \\= - 14$

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