Can someone help me figure out the equation of g(x)?​

The multiplication property of zero states that the product of any number and 0 is 0. what must be true about either a or b to make ab=0

The difference between tax advoidance and tax evasion

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.