Please help solve 12-14

( will give brianlst :))

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

Which is the graph of this function 3 square root of x plus one if

At noon a tank contained 10cm water. after several hours it contained 7cm of water. what is the percent decrease of water in the tank?