Fred did 243 sit-ups in 9 minutes.
Julio did 128 sit-ups in 4 minutes.
Holly did 144 sit-ups in 9 minutes.
Olivia did 60 sit-ups in 5 minutes.

Who did the most sit-ups per minute?

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

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

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39