Since the last question was apparently unclear that i meant EQUATIONS 7 AND 8, here is a repost. please provide a step-by-step explanation!

Which of the following represents a number squared is equal to twenty more than nine times that number ? a) x squared = 9x + 20 b) x squared = 20x + 9 c) x squared > 9 + 20x d) x squared = 9 + x + 20

If 24 people have the flu out of 360 people, how many would have the flu out of 900. choose many ways you could use proportion that david would use to solve this problem

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.