Don't mind the math work I am rying to figure it out without help but can ya help?! NEEDS TO BE DONE IN A FEW SO P. S I NEED HELP WITH NUMBER 9

What is the product of the radical expression. (7-2square root) (8+2 square root)

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. after tax the total is 45.99. what percentage of the subtotal is the total?

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?