Math

The population of a city has been decreasing exponentially since 1990. In 1990, the population was 1,000,000. In 2010, the population was 560,000. If t represents time in years since 1990, which of the following equations best models the decay of the population?

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  1. 100000*(56/100)^(t/(2010-1990))

    massaged as needed

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