Question

I need help with two function equations please!!!

Answer 1

what are the equations?

Answer 2

1.
Use the functions to answer the question.
f(x) = x^2 + 3; g(x) = x-7
Which is equal to (f + g)(x)?

Option A: x^2 + x -4

Option B: x^2 - 4

Option C: x^2 - 14x + 52

Option D: x^3 - 7x^2 +3x -21


2.
Use the function to answer the question.
f(x) = 4x 8
What is the value of f –1(–2)? (Points : 6)
-16
-8
1.5
7.5

Answer 3

2. f(x) = 4x -8

Answer 4

2) is negative 16

Answer 5

That's what i had but i wanted to check, #1 is the one I just can't figure out

Answer 6

what did you get as an answer?

Answer 7

i couldnt really get an answer, I'm having lots of trouble just working through the problem

Answer 8

it would be option c, or a.

Answer 9

I have one more, if that's okay @demoninja
Use the function to answer the question.
f(x) = 4|x + 1| - 6
What is the vertex of the graph of f(x)?
(-1, -6)
(-1, 6)
(1, -6)
(4, -6)