Joelle earns her regular pay of $7.50 per hour for up to 40 hours of work in a week. for each hour over 40 hours of work in a week, joelle is paid 1 ½ times her regular pay. how much does joelle earn for a week in which she works 42 hours?

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.