What is the domain of the relation given below?

{(2,-5), (4,7), (0, 2), (9, -1)}

Liam's parents are driving three times as fast as liam is biking, but they left later than he did. if his parents caught up with him two hours after he left, how much later than liam did they leave?

The last time i bought this product , it cost $20.00 but it looks like it cost 29. 60 today? what is the increase

My math teacher told my class to "steal" a 6th grade fraction word problem from the internet, word problems? : -p requirements: only a 1 step word problem. needs to be complex.