Express the sum using summation notation.3 + 12 + 27 + . . . + 108
A. 
B. 
C. 
D. 
Answer: C
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Use spherical coordinates to find the volume of the indicated region.the region enclosed by the cone 
between the planes 
and 
A. 
?
B. 
C. 
D. 
?
Solve the problem.A committee is to be chosen from a group of fourteen women and twelve men. Determine the number of ways of choosing a female president, a male treasurer, and three other members of either gender. Assume that no one can hold more than one office.
A. 340, 032 B. 2,040,192 C. 436,800 D. 65,780
Use a truth table to determine whether the symbolic form of the argument is valid or invalid.p ? qp ? r----? ~ r ? q
A. 
Symbolic argument is invalid.
B. 
Symbolic argument is invalid.
C. 
Symbolic argument is valid.
D. 
Symbolic argument is invalid.
Match the system of inequalities with the appropriate graph.x + 2y ? 2 x + y ? 0
A. 
B. 
C. 
D. 