Which number is rational and a real number but not an interger

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

Which statement accurately describes how to perform a 90° clockwise rotation of point a (1,4) around the origin?

Which graph of a hyperbola represents the equation 16x^2-y^2=16