emily rides her horse for 2 1/4 hours with a constant speed of 16 mph and then for another 15 minutes with a constant speed of 14 mph what distance did she go

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.