Solve the problem.In how many ways can a class president and a class secretary be chosen from a group of 6 candidates?
A. 11
B. 120
C. 12
D. 30
Answer: D
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Solve the problem.For a charter flight, an airline charges a fare of $200 per person plus $4 per person for each unsold seat on the plane. If the plane holds 100 passengers and if x represents the number of unsold seats, find an expression for the total revenue received for the flight and find the maximum revenue.[Hint: To find an expression for the total revenue, multiply the number of people flying, 
by the price per ticket.]
A. R(x) = (100 - x)(200 + x) maximum revenue: $22,500 B. R(x) = (100 - x)(200 + 4x) maximum revenue: $22,500 C. R(x) = 204(100 - x) maximum revenue: $20,400 D. R(x) = (100 - x)(200 + 4x) maximum revenue: $18,000
Match the surface show below to the graph of its level curves.
A. 
B. 
C. 
D. 
Given that the x- and y-coordinates of a moving particle are given by the indicated parametric equations, find the magnitude and direction of the velocity for the specific value of t.x = 
, y = 5t2 - 3, t = 2
A. 1.54, 270.1° B. 20.00, 270.1° C. 20.00, 90.1° D. 1.54, 90.1°
Answer the question.If P(A) = 
then find the odds in favor of A happening.
A. 6 : 1 B. 1 : 6 C. 1 : 7 D. None of the above is correct.