Jack and jill are raising money for a field trip. jill wants to raise 20% more than jack. if jill reaches her goal and jack raised $525, how much did they collect in all?

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.