Asoccer player kicks the ball to a height of 1 meter inside the goal. the equation for the height, h, of the ball at time, t, is h=-4.9t^2-5t+2. find the time the ball reached the goal.

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.