The diameter of a parabolic mirror is 22 centimeters, and the mirror has a depth of 0.5 centimeters at the center. What is the equation of the the cross-sectional parabola of the mirror?

Abouncy ball is dropped such that the height of its first bounce is 5.5 feet and each successive bounce is 64% of the previous bounce's height. what would be the height of the 7th bounce of the ball? round to the nearest tenth (if necessary).

When 142 is added to a number the result is 64 more then 3 times the number. option 35 37 39 41

Me n o w. i need t h i s. 10 points