Please help. just tell me where to plot the points

Aiden buys two bags of chips at $1.09 each and a 20 ounce soda for $1.20 at the gas station.he knows that the state tax is 5.5. how much change will he receive from a $5 bill?

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

The final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?