Given h(t)=-2(t+5) squared +4, find h(-8)

Super ultra mega important if you can answer this correctly i will give you 100 points but if you don't answer it correctly you'll get a big report. so stay aware and have a nice day!

The diagonals of a quadrilaretral intersect at (-1,4). one of the sides of the quadrilateral is bounded by (2,7) and (-3,5) determine the coordinates of the other side in order for the quadrilaretral to be a square.

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?