Solve the problem.Mary finds 9 fish at a pet store that she would like to buy, but she can afford only 5 of them. In how many ways can she make her selection? How many ways can she make her selection if he decides that one of the fish is a must?

A. 3024; 1680
B. 126; 70
C. 7560; 840
D. 15,120; 1680


Answer: B

Mathematics

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B. 80
C. 4
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What will be an ideal response?

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Solve.(y - 6) - (y + 2) = 5y

A. -  
B. - 2
C.  
D.  

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