Solve.Find the volume of the torus generated by revolving the circle (x - 6)2 + y2 = 1 about the y-axis.
A. 12?2
B. 24?2
C. 6?2
D. 18?2
Answer: A
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Find the natural domain of the function.f(x, y) = 
A. All points in the x-y plane except (0, 0)
B. All points in the x-y plane except 
C. All points in the x-y plane except x = 0
D. All points in the x-y plane
Solve the problem.The surface area of a cylinder whose radius is r inches and height is 9 inches is given by 
square inches. Express the surface area in factored form.
A. 2?r(r + 9) B. 2(?r2 + 18?r) C. 2?r(r + 18) D. 2?(r2 + 18?)
Solve the problem. The enrollment at a certain college for women and men, W(t) and M(t), respectively, can be modeled by the system:W(t) = 92.6t + 3167M(t) = 62.3t + 4092where t is the number of years since 1992. Let P(t) be the percentage of students that are women at t years since 1992. By finding an equation of P, determine the year when 50.4% of students at the college will be women.
A. 2022 B. 2028 C. 2026 D. 2024
Determine which fractions are improper.
, 
, 
, 
, 
A. 
, 
, 
, 
, 
B. 
, 
C. 
, 
, 
, 
D. 
, 
, 