Question

If f(x) = -x + 4 and g(x) = x^2 - 5, then g(f(3)) = ?

A) -8
B) -4
C) -3
D) 0
E) 3

Answer 1

If f(x) = -x + 4 and g(x) = x^2 - 5, then g(f(3)) = ?



We first evaluate f(3) = -3 + 4 = 1



So.....now we have g (1)



Plug 1 into g and evaluate

Answer 2

@dude

Answer 3

how to do that

Answer 4

@umm

Answer 5

this isn't that hard

Answer 6

first, plug 3 in for all the x's in f(x)

Answer 7

then, you plug whatever you get from that into g(x). and then you get ur answer.

Answer 8

We have to do the functions inside, and work our way out.

Calculate f(3), and using the outcome, galculate the g(x) function of that.

f(3) = -3+4 = 1

g(1) = 1^2-5

Answer 9

yeah

Answer 10

-4

Answer 11

Find f(4).

f(x) = x2 + 2x - 3

A) 5
B) 11
C) 13
D) 21
E) 27

Answer 12

is it D

Answer 13

sadly, I can't give you a direct answer unless I wanna be banned

Answer 14

but it pretty easy. just put 4 in for all of the x's

Answer 15

@bill533