Can someone please help

Given the following statements, which is the best

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 ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry