Is 7 and 1/8 greater than 7.025

At which value in the domain does f(x) =0?

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.

This is different from the first one can someone me