Let f(x) = -5x - 4 and g(x) = 6x - 7. find f(x) + g(x)

a. x - 11
b. -11x = 3b
c. -11x - 11
d. x + 3

Simple...

if f(x)= -5x-4 and g(x)=6x-7

And you want f(x)+g(x)

then just addf(x)+g(x)

-5x-4+6x-7

1x-11

This is the answer to f(x)+g(x)=1x-11

Thus, your answer.

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.