Answer:
543,800
Step-by-step explanation:
You have to look to the right of the hundreds place. If its 4 or below, go down if its 5 or up, the number goes up. Hope this helps! :D
6.4y+4.48 Is the answer
800
13. cubic units
14. 43 million; 79 million; 3.6 ×
15. 2.68 ×