Solve the problem.Barry has a collection of 5 different baseball cards. He wants to give some or all of these cards to his friend. How many different sets of cards can he give?
A. 32
B. 5
C. 10
D. 31
Answer: D
Mathematics
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Rationalize the denominator.
A. 
B. 
C. 
- 
D. 
Mathematics
Solve using Cramer's rule, if possible. If it is not possible, state whether the system is inconsistent or has infinitely many solutions.
A. (7, 1) B. (1, 7) C. (-7, -1) D. (-1, 7)
Mathematics
Find the sum of the series.
A. 14 B. 2 C. 12 D. 30
Mathematics
A formula is given along with the values of all but one of the variables in the formula. Find the value of the variable not given.V = 
Bh; V = 12, h = 3
A. 15 B. 36 C. 4 D. 12
Mathematics