The data in the table shows a sinusoidal relationship between the number of seconds an object has been moving and its velocity v(x), measured in centimeters per second.
| x | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 | 120 |
| v(x) | 65.9 | 49.9 | 30.1 | 14.1 | 8 | 14.1 | 30.1 | 49.9 | 65.9 | 72 | 65.9 | 49.9 |
What is true of the cosine function that models the data in the table?
The period of the cosine function is ______ . The equation of the midline of the cosine function is y =_____. The amplitude of the cosine function is ____
32,40,50,100,120
