On pg. 96 question 11 I’m confused with how you came up with your answer even with the explanation. What am I supposed to do there?

Now that we know , work from the inside out of the nested function. That means first figure out the part of . Back to the graph!

OK, so . That means the expression we’re solving for now simplifies: .

Back to the graph one more time for that!

And there you have it, . Putting all the steps together: