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Let (fx) = –5x – 4 and g(x) = 6x – 7. Find (fx) + g(x).
A.
–11x + 3

B.
x + 3

C.
–11x – 11

D.
x – 11

Respuesta :

f(x) + g(x)           Substitute/plug in (-5x - 4) into "f(x)" since f(x) = -5x - 4, and plug in (6x - 7) into "g(x)" since g(x) = 6x - 7

(-5x - 4) + (6x - 7)    Combine like terms(terms that have the same variable and power/exponent)

-5x + 6x - 4 - 7     (I rearranged the terms to be next to their like term)

x - 11       Your answer is D

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