Question

I give up on this quiz. Someone just tell me how to solve the problems because I clearly didn't retain any of this information :(
FAN AND MEDAL WILL BE AWARDED (as always) <3

Answer 1

you have find f(g(2)), first step is find g(2) so get function g(x) which is
x^2-6x-7 and substitute the x for 2, what do you get ?

Answer 2

you have

(2)^2 -6(2) -7 = ??

Answer 3

-15 ?

Answer 4

correct, so now you do the other part which is f(g(2)), you know that g(2) = -15, so you need to solve f(-15), substitute -15 on function f(x)
x + 8 (substitute the x for -15)

Answer 5

so what do you get ??

Answer 6

I am still trying to work it out , I'm a little confused on how exactly to set up the equation

Answer 7

is simple you have function f(x)= x + 8
when substitute the x for -15 it is -15 +8

Answer 8

so what is -15+8 = ??

Answer 9

Oh , then it would be -7 ?

Answer 10

correct, so that is the answer

Answer 11

Thank you :) Mind walking me through the next two ?

Answer 12

next problem is the same procedure, you try solving it and I tell you if is right.
you have f(g(-1)), so what is the first step ?

Answer 13

The first step is to substitute x with -1 ?

Answer 14

correct on function g(x) ?

Answer 15

Yess

Answer 16

so you have x^2 -7x -9, so it is (-1)^2 -7(-1)-9 = ??

Answer 17

That would be -3 ?

Answer 18

you have (-1)^2 = 1 then -7(-1)= 7 and -9 so it is

1 +7 -9 = ??

Answer 19

-1

Answer 20

correct, now what is the next step ??

Answer 21

Move on to the next part and that is f(g(-1)) ?

Answer 22

next part is just f(-1) so substitute the x for -1 on function f(x)

Answer 23

That would look like -1 - 2 ?

Answer 24

good job, so what is the answer ?

Answer 25

-3

Answer 26

correct

Answer 27

the next problem you don't have to solve g(x) because you don't have a number for x, so it is just inserting the equation that is on g(x), to f(x), that means substitute the x"s from f(x) for (-x+3)

Answer 28

try doing it, and I tell you if is right

Answer 29

Okay give me a few minutes

Answer 30

That would be 25

Answer 31

there is no numbers on the third one

Answer 32

you have f(x) = 9x-2, substitute the x for g(x) = -x+3

so you have 9x -2
9(-x+3) -2

do you understand what I did ?

Answer 33

Ohhh ! Yes I understand , I solved it when I wasn't supposed to . My bad

Answer 34

now you solve that by multiplying as follows:
9(-x) = -9x
9(3) = 27 so you have

-9x +27 -2 so what is the answer

Answer 35

25 lol

Answer 36

-9x +25

Answer 37

Thank you so much for your help :)

Answer 38

your welcome :)
Hope it helped you understand how to solve this problems.