Help please find perimeter and area of figure

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.

Bring the fraction a/a-4 to a denominator of 16-a^2

The function below show how much jayna and hannah charge for babysitting. which statement best compares the two plants?