Aboutique sold $127.50 worth of purses. how many purses did they sell? they sell for $7.50 each

What is the value of y? round to the nearest tenth

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.

Witch represents the inverse of the function f(x)=1/4x-12