Can somebody me with this question

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 shows the first equation written in slope-intercept form? 1/2 (2y + 10) = 7x

Afair die is cast four times. calculate the probability of obtaining exactly two 6's round to the nearest tenth of a percent