Evaluate the expression.-2-4
A. 16
B. -16
C. - 
D. 
Answer: C
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Find the indicated probability. Round your answer to 6 decimal places when necessary.You are dealt two cards successively (without replacement) from a shuffled deck of 52 playing cards. Find the probability that the first card is a king and the second card is a queen.
A. 
B. 
C. 
D. 
Solve the problem.A bag of marbles has twice as many blue marbles as green marbles, and the bag has at least 57 marbles in it. At least how many green marbles does it have?
A. At least 20 green marbles B. At least 38 green marbles C. At least 19 green marbles D. At least 29 green marbles
Solve the equation by making an appropriate substitution.(x2 - 3x)2 - 14(x2 - 3x) + 40 = 0
A. {4, 10} B. {- 1, - 2, 4, 10, 4, 5} C. {- 1, - 2, 4, 5} D. {4, 5}
Solve the linear programming problem.Minimize 7x1 + 8x2subject to x1 - 3x2 ? -6 -3x1 + x2 ? -9and x1 ? 0, x2 ? 0
A. Infeasible
B. Minimum = 
when x1 = 
and x2 = 
C. Unbounded
D. Minimum = 16 when x1 = 0 and x2 = 2