A road starts at town A and goes into the mountains. ?
A road starts at town A and goes into the mountains. When you are x kilometers from along the road from A, the height above town A is h(x) meters.
(a) What does h(12) = 400 mean?
(b) What does h'(12) = -60 mean?
(c) If h(12) = 400 and h'(12) = -60 what, approximately, is the height of the road above A at a distance of 12.1 kilometers from A?
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