the measure of one angle is 3° more than 1/2 the measure of its supplement write and solve an algebraic equation to find the measure of each angle. I need help! Can someone plz help me!

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.