Question

Given f(x)=5x+5 and g(x)=6x+1

then what is f(g(−8)) ?


Given f(x)=10x+8 and g(x)=1x+4

then what is (f+g)(3)) ?




Given f(x)=3x+4 and g(x)=8x+1

then what is (f−g)(0)) ?

Answer 1

Given f(x)=5x+5 and g(x)=6x+1, then what is f(g(−8)) ?

First, substitute -8 to g(x). \(g(x)=6x+1\rightarrow g(x)=6(-8)+1\). Solve for x.

Answer 2

Tell me what x is, so can move to step two.

Answer 3

x = -47

Answer 4

Good! Now, we need to substitute g(x)=-47 to f(x)=5x+5. \[f(x)=5x+5\rightarrow f(g(-8))= 5(-47)+5\]

Answer 5

Solve it and that's the answer. :)

Answer 6

-230?

Answer 7

Correct. :)

Answer 8

Can you help me with the rest ?

Answer 9

Given f(x)=10x+8 and g(x)=1x+4

then what is (f+g)(3)) ? this is 45?




Given f(x)=3x+4 and g(x)=8x+1

then what is (f−g)(0)) ? this is -1?

Answer 10

Given f(x)=10x+8 and g(x)=1x+4 then what is (f+g)(3)) ?

Add f(x) and g(x) first.

Answer 11

11x + 12

Answer 12

Then substitute 3 to x.

Answer 13

33 + 12 = 45

Answer 14

Oh wait, is that your answer? 45?

Answer 15

lol yes

Answer 16

I didn't see it at first. :D Yes you're right! I'll check your other answer. :)

Answer 17

-5x - 3 = -5(0) -3 = -3

Answer 18

\[3x+4-8x-1\]

Answer 19

\[-5x+3\]
Substitute 0 to x.

Answer 20

-5x - 3 = -5(0) -3 = -3

Answer 21

Wrong. \(-5x+3\) Substitute 0 to x.

Answer 22

no positive 3

Answer 23

Yes.

Answer 24

Thank you can you help me with something else .

Answer 25

Just post another question and I'd be happy to help. :)

Answer 26

okay . thanks . !!!