Solve the equation. 3.4 = –13.6 + (–3.4c) + 1.7c       –4    2    –8     –10

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.