18 Select the correct answer. A population's instantaneous growth rate is the rate at which it grows for every instant in time. Function r gives the instantaneous growth rate of a bacterial culture x hours after the start of an experiment. r(x) = 0.01(x + 2)(x² - 9) How many hours after the experiment began was the instantaneous growth rate equal to 0? OA. 2 OB. 0 OC. 9 O D. 3 Reset Next

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