In-n-out birthday celebration! worth 40 points!

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

What is the area of mnp? 40 m2 60 m2 68 m2 127.5 m2

The width of a rectangle is 20 units. can the perimeter p of the rectangle be 64 units when its length x is 11 units? no, because p = 2x + 2(20) no, because p ≠ 2x + 2(20) yes, because p ≠ 2x + 2(20) yes, because p = 2x + 2(20)