I need help on #11 :)

How many solutions does the nonlinear system of equations graphed bellow have?

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?

On the first of each month sasha runs a 5k race she keeps track of her times to track her progress her time in minutes is recorded in the table