What is 2+2 guys please

The coordinates of a, b, and c in the diagram are a(p,4), b(6,1), and c(9,q). which equation correctly relates p and q? hint: since is perpendicular to , the slope of × the slope of = -1. a. p - q = 7 b. q - p = 7 c. -q - p = 7 d. p + q = 7

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

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?