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!