Solve the system 12x+2y=86 6x+2y=56

Use set builder notation to represent the following set: { -3, -2, -1, 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.

What is the difference between the predicted value and the actual value