What is 8.29 is less than the product of 42 and x

Does anyone know of a quizlet or something for edmentrum /plato algebra 1

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.

Vertical angles must check all that apply