Cat face minus infinit supra 0?

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

Which function has the domain x> -11

Marco states that 7.696696669…… is a rational number because it is a repeating decimal. is he correct? justify your answer.