What is compatible numbers to estimate 68 divided by 503

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

Kendra had twice as much money as kareem. kendra later spent $8 and kareem earned $6. by then, the two had the same amount of money. how much money did each have originally?

Find the area of the unshaded square