URGENT! PLEASE HELP! The price of a certain item changes over time. The equation y=−5.62x2+475.81x−962.95 models the total y dollars of profit a company makes in one day on the item the when the price of the item that day is x dollars. What is the approximate profit the company makes on the item on a day when the item price is $40?

a) $8029.05
b) $8992.00
c) $9077.45
d) $17855.65

What is the output, or dependent variable of quantity? 1: x 2: f(x) 3: y

Ineed the answers for this one as well!

Aresearcher believes increased perceived control influence the well-being of residents at a nursing home. to test this , she allowed one group of residents to have control over their daily lies, (where to eat etc) . the other group of 5 residents had these deceisions made by staff. the resident's feelings of well-being were measured on a 10 point scale at the end of a one month trial period. is there a difference on well-being?