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Mathematics 7 Online
OpenStudy (anonymous):

The demand for personal computers in the home goes up with household income. For a given community, we can approximate the average number of computers in a home as q= 0.3457 ln X- 3.047. 10000<_x_<125000. where x is mean household income. The average number of computers per household in your town is 0.2 and is increasing at a rate of 0.02 computers per household per year. What is the average household income in your town? How fast is it increasing? (round answer to the nearest $10)

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