Complete the real-world problem that could be modeled by a linear function whose x-intercept is 8 and whose y-intercept is 72. Jen wants to save $
. Each week she will save $
. The function shows how much money Jen has left to save each week.

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.