The height, in feet, of a t-shirt launched from a t-shirt cannon high in the stands at a football stadium is given by h(x) = -8x^2+ 32x + 40 where x is the time in seconds after the t-shirt is launched. What is the factored form of the equation for the height of the t-shirt?​

Iam trying to solve a linear equation for the shoe size of someone 84" tall taking into consideration example 1 is 69" tall with a shoe size of 9 and example 2 is 72 inches tall with a shoe size of 11. i understand that the equation should be y=mx+b and that on the graph the answer is (3,2) but i just don't understand how to create the equation to solve for 84-inches and 60-inches tall questions. after two days, i need .

Find the solution of each of the following.

Sum of the interior angles of a pentagon