This Exercise Uses The Population Growth Model A Certain Culture Of The Bacterium Rhodobacter Sphaeroides Initially Has 1 (27.41 KiB) Viewed 44 times
This exercise uses the population growth model. A certain culture of the bacterium Rhodobacter sphaeroides initially has 50 bacteria and is observed to double every 6 hours. (a) Find an exponential model n(t) = no 2 t/a for the number of bacteria in the culture after t hours. n(t) = (b) Estimate the number of bacteria after 19 hours. (Round your answer to the nearest whole number.) bacteria (c) After how many hours will the bacteria count reach 1 million? (Round your answer to one decimal place.) hr t =
In the formula A(t) = (1+)** for compound interest, the letters Por, n and t stand for percent interest rate of return number of time periods So if $300 is invested at an interest rate of 6% compounded and number of times interest is compounded per year, respectively, and A(t) stands for amount of interest earned after t years quarterly, then the amount after 3 years is $ (Round your answer to the nearest cent.)
A man invests $4000 in an account that pays 8.5% interest per year, compounded quarterly. (a) Find the amount after 2 years? (Round your answer to the nearest cent.) (b) How long will it take for the investment to double? (Round your answer to two decimal places.) yr
Nancy wants to invest $3000 in saving certificates that bear an interest rate of 7.75% per year, compounded semiannually. How long a time period should she choose to save an amount of $5000? (Round your answer to two decimal places.) yr
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