Question

IS If f(x) = x2 + x and g(x) = x - 3, find f(g(7)). IS THE ANWSER 28 ???? IF NOT CAN SOMEONE HELP ME

Answer 1

WIO I GOT 28??

Answer 2

is that right ??

Answer 3

WHAT? YOU GOT 27?

Answer 4

no i got 28 as the answer for If f(x) = x2 + x and g(x) = x - 3, find f(g(7)).

Answer 5

Do you know what \(g(7)\)?

Answer 6

is it 7

Answer 7

Isn't \(g(x) = x-3\)?

Answer 8

yes so x=7 right? so g(7)

Answer 9

Then \(g(7) = 7-3\)

Answer 10

CAN YOU SIMPLIFY?

Answer 11

its 4 but the answer choices are 20,28,32 or53

Answer 12

there is no 4

Answer 13

The answer is not 28.

Answer 14

So if you have \(g(7)\), then can you find \(f(g(7))\)?

Answer 15

ya u can ?

Answer 16

SO WHAT DO YOU GET?

Answer 17

First plug x=7 into g(x)=x-3

Answer 18

i got 28 when i plug the numbers in

Answer 19

you should get G(7)=7-3

Answer 20

SHOW YOUR WORK

Answer 21

which equals 4

Answer 22

yea but the answer choices are
20
28
32
53

Answer 23

WHAT IS F(4)?

Answer 24

so g(7) would equal 4 but were not done yet

Answer 25

WHO SAID G(7) WAS THE ANSWER?

Answer 26

now you plug g(7) into f(x) and you should get

Answer 27

ohh ok so its 20???

Answer 28

\[
f(g(7)) = f((7)-3) = f(4) = (4)^2+(4)
\]

Answer 29

f(g(7))= f(4)= 4^2+4=16=4 which would equal 20

Answer 30

ohh so its 20 ohh so when u get 4 u plug that in ?? also

Answer 31

SOOOO f(g(7)) equals 20

Answer 32

yes plug in the 4

Answer 33

G(7)=7-3. &-3 equals 4. Thats where you get the 4 and you plug it in.

Answer 34

ohh so If f(x) = x2 and g(x) = x + 6, find g(f(0)) it will be =6 right because its 0??

Answer 35

???

Answer 36

yea.

Answer 37

so the answer for If f(x) = x2 and g(x) = x + 6, find g(f(0)) is 6 because you plug n 0 for X ??????

Answer 38

????

Answer 39

That question is not the question you asked.

Answer 40

post another thread for it.

Answer 41

no i know I'm getting examples so i can learn how to do it so my example is If f(x) = x2 and g(x) = x + 6, find g(f(0)) i say the answer is 6