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Evaluate composite functions

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Problem

Given:
g(x)=3x2h(x)=9x
Danielle tried to evaluate (gh)(7), but she made a mistake. Here is her work.
Step 1g(7)=372=35Step 2h(7)=9(7)=63Step 3(gh)(7)=3563=1895
What is the mistake in Danielle's work?
Choose 1 answer:
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