Solve the problem.How many ways are there to choose 9 books from a collection of 12 different books?
A. 79,833,600
B. 55
C. 660
D. 220
Answer: D
Mathematics
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Use rational equations to solve the problems.Frank can type a report in 3 hours and James takes 4 hours. How long will it take the two of them typing together?
A. 
hr
B. 
hr
C. 4 hr
D. 12 hr
Mathematics
Make a preference table for the given voting situation.Ten voters are asked to rank 4 brands of cell phones: A, B, C, and D. The ten voters turn in the following ballots showing their preferences in order: 
Make a preference table for these ballots.
A. 
B. 
C. 
D. 
Mathematics
Multiply.
A. 85,938 B. 85,928 C. 86,028 D. 85,918
Mathematics
Find the center and radius of the circle with the given equation. x2 - 2x + 1 + y2 - 8y + 16 = 36
A. Center (-4, -1), r = 36 B. Center (4, 1), r = 6 C. Center (1, 4), r = 6 D. Center (-1, -4), r = 36
Mathematics