Question

f(x)=3x-7 and g(x)=-2x-6. Find (f o g)(4)
Can you show how to do it?

Answer 1

@kelly226 Graphing Radical Functions Quiz

Answer 2

i'll message it to you:)

Answer 3

Thank you <3

Answer 4

\(\bf f(x)=3x-7 \qquad {\color{red}{ g(x)}}=-2x-6\\ \quad \\
(f\ o\ g)(x)\implies f(\quad g(x)\quad )\qquad (f\ o\ g)(4)\implies f(\quad g(4)\quad )\\ \quad \\
f(\quad g(x)\quad )=3({\color{red}{ -2x-6}})-7 \\ \quad \\
(f\ o\ g)({\color{blue}{ 4}})=3({\color{red}{ -2({\color{blue}{ 4}})-6}})-7\)

Answer 5

Thank you @jdoe0001 :)

Answer 6

\(\bf g(4)=-2(4)-6\\ \quad \\
f(\quad g(4)\quad )=3({\color{red}{ -2(4)-6}})-7\)

Answer 7

you'd have to solve :), or just add in this case

Answer 8

keep in mind that, all you're really doing is finding g(4) firstly
then
plugging in that value found in f( g(x) )

Answer 9

Oh okay that's understandable. so Im solving f( g(4) )=3(-2(4)-6)-7 ?

Answer 10

yeap

Answer 11

I got -49, @jdoe0001

Answer 12

yeap