The function s(x) = 3600 = 3600(60 + x) gives a person's average speed in miles per hour if he or she travels one mile in 60 + x seconds. Use a linear approximation to s at 0 to find a person's approximate average speed if he or she travels -1 60 + x one mile in 51 seconds. What is his or her exact speed? mi The person's approximate average speed is hr

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