Question

# 11. At what rate of interest compounded continuously, will an investment triple in 9 years? 12....

11. At what rate of interest compounded continuously, will an investment triple in 9 years?
12. The number of trees in a forest is decreasing at a rate of 6% per year. If in 2003 there were 2,500 trees, find the exponential expression for the number of trees as a function of the year. Letting 2003, find the number of trees in 2009.
13. A population of mice is growing at a rate proportional to the population at a given time. If the number of mice is growing at a rate of 7.5% per day, and there are 15 mice on January first, how many mice will there be at the end of the month?
14. Given that the marginal cost is .2, and revenue is find the number of items at market equilibrium. (Remember, market equilibrium is when revenue equals cost) Please be informed that I m supposed to do first and only one question. So, it's my humble request please don't give negative rating because of that reason !!!!

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