C=(7,-4) and d=(-8,-5)

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.

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents

If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?