Who likes Alec Benjamin?

Np4=12np2 with clear explanation.

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.

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?