The power of ten representation of four thousandths

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

Which is a graph of a proportional relationship?

Which of the following is an example of a rational number? a. π b. √ 9 c. √ 8 d. 3.8362319