Suppose that for a particular product, the number of units x produced per month depends on the number of thousands of dollars y invested, with x- 30y + 40y. At what rate will production increase if $10,000 is invested and if the investment capital is increasing at a rate of $1000 per month? x units/month?

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A: topic -linear equation in one variable

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Q: company

A: Please refer to the image below

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