0 ÷ 2 + 7 · 5

Please help :(

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

What is the radical expression that is equivalent to the expression 27 1 over 5?

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?