Question

4. If f(x) = 4x + 1 and g(x) = −x − 2, find (f + g)(−1).

Answer 1

What (f+g)(-1) means is to add up the two binomials first f(x)+g(x), and then substitute -1 for x. What do you get when you do:
4x+1-x-2

Answer 2

5x=3???

Answer 3

There's no = sign, just simplify it by adding like terms:
First do 4x-x, and then 1-2

Answer 4

3x -1?

Answer 5

@zaynahf

Answer 6

Good.. now just substitute -1 for x

Answer 7

so it's going to be -1x or -3x

Answer 8

No, because you are substituting something for x, there will be no more x. Do this: 3(-1)-1

Answer 9

-4!!

Answer 10

Yep! You got it!

Answer 11

thank you please come to my next post!

Answer 12

Sure..