SOLUTION: Please help. I don't know how to start solving this problem: If f(x)=2^x-1 and g(x) = x^2-1, determine the value of (f o g)(3) Thank you for your time

Question 288795: Please help.
I don't know how to start solving this problem: If f(x)=2^x-1 and g(x) = x^2-1, determine the value of (f o g)(3)
Thank you for your time
Answer by texttutoring(324) (Show Source): You can put this solution on YOUR website!
This is a composition of functions problem.

I assume that f(x) should be written like this:

and

(f o g)(3) means put x=3 into g(x), get a number, and then put that number into f(x)

Here's how it's done:

Now find f(8):

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