Disease tend to spread according to the exponential growth model. In the early days of AIDS, the growth rate was around 190%. in 1983, about 1700 people in the U.S. died of AIDS. If the trend had continued unchecked, how many people would have died from AIDS in 2005? 2. Portland’s population in 2007 was about 568 thousand, and had been growing by about 1.1% each year. (a) write a formula for the population of Portland. (b) if this trend continues, what will Portland’s population be in 2016? (c) if this trend continues, when will Portland’s population reach 700 thousand? Use the formula in the picture! Make sure it is understandable and correct answers only!

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