The height of a ball thrown upward from the ground is given by the quadratic function h = 160t - 16t2, where h is in feet and t is in seconds. what is the reasonable domain for this function?

The point a is at –2 and the point b is at 7. marissa would like to divide this line segment in a 4: 3 ratio, and she would like to use the formula x = (x2 – x1) + x1. what values should she substitute into the formula? a = a + b = x1 = x2 =