A minivan traveling at 50 mi/h and a motorcycle traveling at 60/h cover the same distance. It takes the minivan 1 hour longer to make the trip. How many hours did it take for the motorcycle to make the trip?

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.