On pg. 96 question 9 I’m confused with how you came up with the answer 2, I got the answer 4. How did you come up with 2 I don’t understand?

That question refers to the graph below and says:

So, take it one step at a time. First, if , what’s ? When , the graph is at , so , therefore .

From there, we need to find . Well, we know , so the in the function argument just becomes 2, like so: .

We already figured out above that , so to find we just multiply!