Aball is thrown into the air. the height h, in feet, of the ball can be modeled by the equation h= -16t^2 + 20t + 6, where t is the time, in seconds, the ball is in the air. when will the ball hit the ground?

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field