Solve the problem.How many ways can a class president, a class secretary, and a class treasurer be chosen from a group of 8 candidates?
A. 1680
B. 21
C. 24
D. 336
Answer: D
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Use the figure shown below to answer the question(s).
Triangle PAC is rotated 120° counterclockwise about the rotocenter P. The image is
A. triangle PDE. B. triangle PGO. C. triangle POA. D. triangle PCD. E. none of these
Solve the variation problem.According to Ohm's law, the electric current I, in amperes, in a circuit varies directly as the voltage V. When 17 volts are applied, the current is 4 amperes. What is the current when 30 volts are applied?
A. 4.25 amperes B. 7.06 amperes C. 51 amperes D. 127.5 amperes
Find the square root. If it is not a real number, say so.
A. 
B. 
C. 
D. 
Find the particular solution for the initial value problem. 
+ 2x = 3x2; y(0) = 11
A. y = 3x3 + 2x2 + 11 B. y = x3 - x2 + 11 C. y = 3x3 + x2 + 11 D. y = x3 + 2x2 + 11