Two people compete in a five-mile go-kart race. Person A travels 1/10 mile every 15 seconds. Person B travels 3/8 mile every 48 seconds. Who wins the race? Then find the difference of the finish times?

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.

3. a sum of $2700 is to be given in the form of 63 prizes. if the prize is of either $100 or $25, find the number of prizes of each type.