Question
Asked Dec 2, 2019
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For the following functions, find (f*g)(3) (Enter an exact number.)

f(x)=x^2-8

g(x)=4x-5

 

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Expert Answer

Step 1

(f*g)(3)= f(3)*g(3)

We find f(3) by plugging x=3 in f(x).

f(3)=1

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f(x)=x2-8 f(3)-32-8 f(3) 9-8 f(3)=1

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Step 2

We find g(3) by plugging x=3 ...

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g(x) 4x-5 g(3) 4(3)-5 g(3)=12-5 g(3)=7

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