Tom solved the problem a different way. First he found the total area of the floor, and then he multiplied by the height. Does Tom’s method work? Explain.

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

Place the following steps in order to complete the square and solve the quadratic equation,

Which function has the domain x> -11