Solve the problem.An auxiliary fuel tank for a helicopter is shaped like the surface generated by revolving the curve 
- 4 ? x ? 4, about the x-axis (dimensions are in feet). How many cubic feet of fuel will the tank hold to the nearest cubic foot?
A. 4
B. 13
C. 17
D. 7
Answer: B
Mathematics
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Rationalize the denominator. Assume that all variables represent positive real numbers.
A. 
B. 5p2
C. 
D. 
Mathematics
Identify the independent variable and the dependent variable.Let r be the rate (in gallons per hour) at which water is added to a tank, and let t be the number of hours it takes to fill the tank.
A. independent: t; dependent, r B. independent: r; dependent, t
Mathematics
Use < or > for ? to write a true sentence.
? 
A. < B. >
Mathematics
Factor the polynomial f(x). Then solve the equation f(x) = 0.f(x) = x3 - 10x2 + 27x - 18
A. (x - 1)(x - 3)(x - 6) ; 1, 3, 6 B. (x + 1)(x - 3)(x + 6) ; -1, 3, -6 C. (x - 1)(x - 3)(x - 7) ; 1, 3, 7 D. (x - 1)(x + 3)(x - 6) ; -1, 3, -6
Mathematics