What is 572 rounded to the nearest hundred?

What is (28 + 7 + 6 + 3) x 1/2 show your work

While scuba diving, rajeev dove to a depth of 12.6 feet below the surface of the water and then descended another 8.7 feet. what expression can be used to find rajeev's new position? 12.6 – 8.7 –12.6 – 8.7 –12.6 – (–8.7) 12.6 – (–8.7)

Ineed ! the person who answers and shows their work on they got the answer first will be marked the !