I need the answer pls

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

What is x3+3x2−16x−48 divided by x−1?

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax