Guys help I’m failing math this assignment is 100 points it will boost my grade I’m timed..

In the past, professional baseball was played at the astrodome in houston, texas. the astrodome has a maximum height of 63.4 m. the height of a baseball t seconds after it is hit straight up in the air with a velocity of 45 ft/s is given by h = -9.8t2 + 45t + 1. will a baseball hit straight up with this velocity hit the roof of the astrodome? use the discriminant to explain your answer.

Simply 8x squared + 5(7x squared- x) - 2x =

How can you tell when x and y are not directly proportional?