The graph shows the distance *y*, in feet, a pendulum moves to the right (positive displacement) and to the left (negative displacement), for a given number of seconds.

How many seconds are required for the pendulum to move from its resting position, swing in one direction and return to its resting position?

The graph shows how many centimeters above a table top, *y*, a painted spot on an automated hamster wheel is for a given number of seconds *x*.

How many degrees is the painted spot turning into 0.75 s?

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Guest Feb 7, 2018