A ball is launched upward at 48 ft/s from a platform that is 100 ft. high. This can be modeled by the equation
h(t) = -16t? + 48t + 100
How long does it take the ball to reach its maximum height?

Aprobability experiment is conducted in which the sample space of the experiment is s={7,8,9,10,11,12,13,14,15,16,17,18}, event f={7,8,9,10,11,12}, and event g={11,12,13,14}. assume that each outcome is equally likely. list the outcomes in f or g. find p(f or g) by counting the number of outcomes in f or g. determine p(f or g) using the general addition rule.