1. A ball is thrown vertically upward from the ground with an initial velocity of 110 ft./sec. Use the quadratic function y= -16t^2+ 110t to find out how long it will take the ball to reach its maximum height, and then find its maximum height. Round your answers to the nearest tenth.

1. A computer store owner estimates that by charging dollars each for a certain computer, he can sell computers each week. The quadratics function y= -x^2 + 50xis used to find the revenue, y, received when the selling price of a computer is . Find the selling price that will give him the maximum revenue, and then find the amount of the maximum revenue.