Can somebody help me with this i have 20 minutes

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.

Graph the equation. select integers for x

Select the graph of the solution. click until the correct graph appears. |x| = 3