#11: If ur good at algebra 1 please help me I really really need it, thanks.

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

Write an equation in point-slope form for the line through the given point that has the given slope (-2,-7); m=-3/2

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package