Need help putting these least to greatest , 0.81 , 0.9, 0.73, 0.7

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 measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 25, a standard deviation of 2.5, and margin of error of 5%