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1.The rate of growth of a certain bacteria B,in a petri dish is proportional to the number of bacteria in the dish.2.An object moves along a straight line. It speed S, is inversely proportional to the square of the distance S, the object traveled.3. Every month the balance, B, of Rachel’s car loan increases by 4.5% and decreases by $375.00.4.The fraction of the student body P,who has heard a rumor increases at a rate proportional to the fraction of the population who has not yet heard the rumor.5. The rate of growth of a population of grasshoppers is inversely proportional to the square root of the population.6. The rate of decay of a certain substance R, is inversely proportional to the amount of substance remaining.7. Your sweet potato casserole C, is removed from a hot oven. The room temperature of the kitchen is 75Ԭ. The rate at which the casserole cools is proportional to the difference between the room temperature and the temperature of the casserole.