Which equation can be solved to find x, the measure of jk in the diagram below?

Pick the description of a geometric object that best matches the real world object box for a deck of card

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.

What is the area of the trapezoid shown ?