Find the scale factor.

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.

The anwser cause i do not understand just plez

How many solutions does the nonlinear system of equations graphed below have? a. one b. zero c. four d. two