(URGENT) Plz answer my unanswered question that i have on my asked questions list

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.

Which diagram shows lines that must be parallel lines cut by transversal?

Perform the indicated operation and write the answer in the form a + bi. (-5 + 2) + (3 - 6i)