Solve the problem.How many ways can a class president, a class secretary, and a class treasurer be chosen from a group of 5 candidates?
A. 15
B. 60
C. 12
D. 120
Answer: B
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Solve the problem.Benjamin never has more than 21 hours free during the week. He is trying to make a weekly plan for dividing his free time between reading and working out. He wants to spend at least 8 hours per week reading. Write a system of inequalities to describe the situation. Let 
of time for reading and 
of time for working out.
A. x + y ? 21 x ? 8y x ? 0 y ? 0 B. x + y ? 21 x ? 8y x ? 0 y ? 0 C. x + y ? 21 x ? 8 y ? 0 D. x + y ? 21 y ? 8 x ? 0
Use properties of multiplication to multiply.3 ? 0
A. 30 B. 0 C. 1 D. 3
The demand function for a certain brand of compact disc is 
where p is the wholesale unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. Compute the elasticity of demand and determine whether the demand is inelastic, unitary, or elastic when x = 10.
?
A. elastic B. inelastic C. unitary
List the symmetries of the given function, if there are any. Otherwise, state "No symmetry".f(x) = -3x3
A. y-axis B. x-axis C. Origin D. No symmetry