Need Help Quick Please! Solve for x.

−1/5 (x − 4) = −2

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x =

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.

Solve: 3x+y=6 4x-2y=18 show all work !

Which of the following is true for the relation f(x)=2x^2+1