Answer:
A=8.4063
Step-by-step explanation:
Be the functions:
according the graph:
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1 answer:
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Since the order of the books chosen doesn't matter, we use the combination formula to find the number of possible selections. Recall that a combination of k items from a set of n items is given by 
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In this problem, n = 8 and k = 3. So the number of possible selections is
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In this problem, n = 8 and k = 3. So the number of possible selections is