I buy a sweater for 40 dollars. Tax is 9%. What is the total bill?

What is the order of magnitude for the number of liters in a large bottle of soda served at a party

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

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