Which of the following is an example of a quadratic equation? O A. x^2 = 25
O B. y =1/x2
O C. y = 3x +2
O D. X-4 = 7

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.

Measures of the angle of r, 31 s (x+4) t (3x+9)

If i have 20$ and i gave 5$ away how much i got