you have two jobs. job a pays $10 per hour and job b pays $15 per hour. One week you work a total of 50 hours and earned a total of 575. you must have worked_ hours at job a and _ hours at job b.

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.