1) The area of a circular sun spot is growing at a rate of 800km2/s.
(a) How fast is the radius
growing at the instant when it equals 6,000 km? (Round your answer to three decimal places.)
2) The weekly sales of Honolulu Red Oranges is given by q = 896 − 20p.Find this maximum revenue.
A r2dAdr 2 rdtdt800 2 6000 drdt 800dr 12000 dtdr0.021 dt R pq p 896 20 p 896 p 20 p 2vertex,896p 22.42 20 R 22.4 10, 035.2
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