Evaluate the derivative of the given function at the given point.y = x2 - 3; (4, 13)

A. 4
B. 19
C. 38
D. 8


Answer: D

Mathematics

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A. Yes B. No

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Provide an appropriate response. A small office manager wants to buy new cordless phones for each of the office's 11 desks. Each phone costs $89.99. Estimate the total cost by using numbers with one nonzero digit. Find the exact amount.

A. $900; $898.98 B. $900; $989.89 C. $800; $989.89 D. $800; $989.99

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Factor completely.12m2n + 24m2 - 4mn - 8m

A. 4m(3m + 1)(n - 2) B. (3m - 1)(n + 2) C. 4m(3m - 1)(n + 2) D. m(3m - 1)(n - 2)

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Solve the problem. Round to the nearest tenth, if necessary.A painter leans a ladder against one wall of a house. At what height does the ladder touch the wall?

A. 13.6 ft B. 18.5 ft C. 92.5 ft D. 6.8 ft

Mathematics