question 6).a football is kicked into the air from an initial height of 4 feet. the height , in feet, of the football above the ground is given by s(t)=16t^2+50t+4, where t is time, in seconds, and t>0. at what time will the football be 25 feet above the ground?

question 7)the lengths of the sides of a rectangular window have the ratio 1.7 to 1. the area of the window is 2,720 square inches. what are the dimensions of the window?

question 9) ms. ortiz sells tomatoes wholesale. the function p(x)=-80x^2+320x-10, what should ms.ortiz charge per kilogram of tomatoes to make the maximum profit, and what is the maximum profit she can make on a load of tomatoes?