What’s the correct answer for this?

Ineed to know the answer to this algebra question.

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

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.