The function for the total profit (in rand) for selling 𝑥 items is 𝑃(𝑥) = -20𝑥^2 + 8000𝑥 + 50. The number of items for which the marginal profit will be R400 is: Select one: a. 400. b. 200. c. 50. d. 190.
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Step 1: Identify the given function for total profit \( P(x) \): \[ P(x) = -20x^2 + 8000x + 50 \] Show more…
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