15. Business: interest compounded continuously. An 15. investment is made at 3.5

Question

15. Business: interest compounded continuously. An 15. investment is made at 3.512% per year, compounded continuously. What is the doubling time? Round to the nearest tenth of a year. 16. Business: cost of tuna. The cost C of a can of tuna in 2004 was $1.29. In 2010 the cost was $1.87. Assuming the exponential-growth model applies: (a) Find the exponential-growth rate to the nearest 16. (a) tenth of a percent, and write the equation. (b) Find the cost of a can of tuna in 2012 and 2018. 17. Life Science: bacterial population. After beginning

Explanation / Answer

15. y(t)=y0ert

2y0=y0e0.03512t

ln2=0.03512t

t=19.7years

Therefore the doubling time is 19.7years

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