A ball was thrown upward in to the air. The height in feet, of the ball above the ground b seconds after being throw can be determined by the expression h = -15b^2 + 49b + 5. What is the meaning of the 5 in the expression?​

Use pythagorean’s theorem and find the missing side lengths of the two smaller triangles and add them together
13^2 - 12^2 = 5
15^2 - 12^2 = 9
5+9 = 14
14 is the length of each side of the square
14^2 + 14^2 = 19.8
19.8 is the diagonal length of the inside if the square