It's a small question

How far is x from 5 on a number line?

The graph shows the distance y, in inches, a pendulum moves to the right (positive displacement) and to the left (negative displacement), for a given number of seconds x. how many seconds are required for the pendulum to move from its resting position and return? enter your answer in the box.

For which pair of functions is (gof)(a)=|a|-2?