Just anwser random things to earn points, will reward brainliest

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0

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.