The wheels on annie's bicycle are 20 inches in diameter. if each wheel makes 3 full revolutions every second, then how many feet does annie travel in 1 second? give your answer as an integer, rounded to the nearest foot.

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.