The profit p, in dollars of selling x widgets and y gadgets, is given by the function p(x, y)=7x+6y. which corner point of the shaded region will maximize the profit?

A.(15,25)
B(20,15)
C(10,30)
D.(0,35)

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.