What is the greatest common factor of the following rational expression?

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

The table represents a linear function. what is the slope of the function? –6 –4 4 6

For which pair of functions is (gof)(a)=|a|-2?