took a practice test this morning did okay just couldn't do some problems quickly
#31 Betty Lobs drops a tennis ball from a height of 12 meter. Each time it hits th rebounds to a height of 60% find the distance the ball travels after it hits the ground the fourth time?
I know how to this but it takes me too long is their a short way
#49 instantaneous rate of change of the volume of a right circular cone with a radius of 4cm and an altitude twice its radius is K cm^3/cm. Find K.
#53 Herr Gauss has a box that contains the four letters NINE. If he randomly selects one letter at a time and lines them up, what is the probability that the lines up word is NEIN?
#26 A circle with the center C has a radius of 11 in. A chord AB of the circle is * in long. Find the distance from the chor to the center C?