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mary is riding her bike up a mountain canyon after half an hour she is at an elevation of 4,000 feet after an hour she is at an elevation of 4,550 feet what is the average rate of change for elevation?

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Answer:

75 ft per hour

Explanation:

We have height as a function of time:

x = tme, y = height

Our two points are: (2, 400), (6, 700)

Rate of change = slope

m = (700-400)/(6-2) = 300/4 = 75 ft per hour

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