Please help with my math, instructions: Factor each expression. If the expression cannot be factored, write cannot be factored. (Odd questions only) (that’s why the other half is blacked out)

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.