Question

If f(x)=3x-8 and g(x)=4-7x, what is f(g(x))?

Answer 1

https://youtu.be/Qu-c-XWLNf0

Answer 2

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Answer 3

May I help?

Answer 4

Yes

Answer 5

Thanks.

Answer 6

This form of operations on function is called: function of the function.
In other simple words: f(g(x)) means f is a function of the function g(x)
which means: replace every x in the function f(x) with g(x).


For our case:
f(x)=3x-8
g(x)=4-7x

so that f(g(x))=3[g(x)]-8=3[4-7x]-8=12-21x-8=4-21x

That is it!

I hope that helps!

Answer 7

@Latavia.2k18

Answer 8

Omg thank you this really helped me a lot @3mar

Answer 9

Thank you for learning!
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Answer 10

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