The relationship between altitude and the boiling point of a liquid is linear. At an altitude of 8200 ft, the liquid boils at 203.34F. At an altitude of 4200 ft, the liquid boils at 208.54. Write an equation giving the boiling point of the liquid, in degrees Fahrenheit, in terms of altitude a, in foot. What is the boiling point of the liquid at 2600?

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.