Do Not Have To Show Work

1.Points (-5, 3) and (1, 7) are endpoints of the diameter of a circle.

A. What is the exact length of the diameter? (Simplify as much as possible)

B. What is the equation of the circle?

2.A bottle of water at 76F is placed in a refrigerator that maintains a constant temperature of 36 F. The temperature T of the water t minutes after it is placed in the refrigerator is given by T(t) = 36 + 44 e^- 0.058t Find the temperature of the water 11 minutes after it is placed in the refrigerator. (Round to the nearest degree.)

3.Which of these polynomials has a graph which exhibits the following end behavior: as x approaches , f(x) approaches -; and as x approaches -, f(x) approaches -.

A. f (x) = 4x3 + x + 8

B. f (x) = 7x4 - 3x2 - x

C. f (x) = -5x6 - 9x2 - 5

D. f (x) = -8x5 + 7x3 - x - 5