Can someone answer this for me ?

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.

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

Empty box + box + empty box fill in the box is equal to 30 how