Can anyone do my 8th grade Imagine Math?

Answer this question! 30 points and brainliest! only if you know the answer.

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 does x = in this equation x+3+2x=x+5