A ball is thrown into the air and its position is given by h(t) = - 3.6t + 90t + 22 where h is the height of the ball in meters t seconds after it has been thrown. Find the maximum height reached by the ball and the time at which that happens. (Round to the nearest hundredth). meters seconds A company that produces cell phones has a cost function of C = 20x - 419x + 15073, where C is the cost in dollars and I is the number of cell phones produced (in thousands). How many cell phone produced will minimize the cost function? phones You have 48 feet of wire to enclose 3 sides of a garden. One side is a wall Wall (no fence needed) that needs no fence. The vertical sides (labeled x) each require 4 strands of wire. The horizontal side (labeled y) requires 2 strands of wire. X garden X What values for x and y will create a fence that encloses the maximum area of garden? y X : feet feet Find the point on the line -5x + 5y + 6 = 0 which is closest to the point ( - 2, - 3). (x, y) =