2. A display window consists of a stacked pyramid of books for sale. The bottom row has 27 books. Each row has two fewer books t
han the row below it. The display has 13 rows (a) Write and use a function to determine how many books are in the top row. Show your work. (5 points ) (b) Use the appropriate formula to determine the number of books in the entire display. Show your work . (4 points )
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