perform the indicated operation (attached in comments)

Question

anonymous · Answer

f(x)= -3x-2
g(x)= x^3 +5x^2
Find (f o g)(-5) *circle function

anonymous · Answer

plug in -5 into g(x)
Then plug that answer into f(x)

anonymous · Answer

alright, give me a few minutes to work it out

anonymous · Answer

once i get g(-5)=0, how do i substitute that into f(x) ?

anonymous · Answer

@jim_thompson5910 you must want to kill me by now but do you wanna help me out yet again?

jim_thompson5910 · Answer

(f o g)(-5) 

is the same as

f( g(-5) )

so if g(-5) = 0, then 

f( g(-5) )

is the same as

f( 0 )

jim_thompson5910 · Answer

So 

(f o g)(-5) 

is the same as 

f( 0 )

anonymous · Answer

so final answer is -2

jim_thompson5910 · Answer

yes

anonymous · Answer

i really cannot thank you enough, not only do you help me get the correct answers, you make me understand it more. ^u^

jim_thompson5910 · Answer

that's great, I'm glad I did, yw

anonymous · Answer

f(x)= 2x-2
g(x)= x^2+3x
Find (f o g)(-7)
my final answer came out to be 54

jim_thompson5910 · Answer

you nailed it, very nice

anonymous · Answer

YAY! tysm

jim_thompson5910 · Answer

np