Arepairman charges $50 to diagnose a problem and $35 for each hour he works to fix the problem. which equation can be used to model the total dollar amount, y, charged by the repairman to diagnose and fix a problem in x hours? a) y = 50x + 35b) y = 35x + 50c) 35(x + 50)d) 50(× + 35)

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.