Anyone mind helping?

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

Given: m∠ adb = m∠cdb ad ≅ dc prove: m∠ bac = m∠bca lol

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1