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Mathematics 8 Online
OpenStudy (anonymous):

If f(x)=2x, g(x)=2x-1, and h(x)=√x, find (f o g o h)(9).

OpenStudy (anonymous):

I have no idea how to even start

OpenStudy (anonymous):

Another way of writing that is f(g(h(9))). Work from the inside out. What is h(9)?

OpenStudy (anonymous):

√9

OpenStudy (anonymous):

which simplifies to 3. so now find g(3)

OpenStudy (anonymous):

5

OpenStudy (anonymous):

now f(5)

OpenStudy (anonymous):

10

OpenStudy (anonymous):

thats your answer

OpenStudy (anonymous):

Thank you so much!

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