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

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

really really sorry if i'm

-12 -5(x + 4) = 3x

-12 - 5x - 20 = 3x

-12 - 20 - 5x = 3x

-32 - 5x = 3x

    + 5x   + 5x

-32 = 8x

8         8

- 4= x

a king of hearts and a 2 of spades