Solve the problem.A bag of marbles has twice as many blue marbles as green marbles, and the bag has at least 36 marbles in it. At least how many green marbles does it have?
A. At least 12 green marbles
B. At least 13 green marbles
C. At least 24 green marbles
D. At least 18 green marbles
Answer: A
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Find the indicated term for the sequence whose general term is given.an = 3n; a5
A. 81 B. 125 C. 243 D. 15
Simplify.
A. 
B. 
C. 
D. 
Solve the system of equations.
A. x = 2 - 5z, and y = 3z - 1, where z is any real number
or {(x, y, z) |x = 2 - 5z, and y = 3z - 1, where z is any real number}
B. x = 2 + 7z, and y = -3z - 1, where z is any real number
or {(x, y, z) |x = 2 + 7z, and y = -3z - 1, where z is any real number}
C. x = 1 - 5z, and y = 3z - 
, where z is any real number
or 
D. x = -2 - 7z, and y = -3z -1, where z is any real number
or {(x, y, z) |x = -2 - 7z, and y = -3z -1, where z is any real number}
Find the probability of the following card hands from a 52-card deck. In poker, aces are either high or low. A bridge hand is made up of 13 cards.A royal flush (5 highest cards of a single suit) in poker
A. 2.75 × 10-4 B. 1.54 × 10-6 C. 3.85 × 10-7 D. 1.98 × 10-3