The amount of bacteria in a culture was continuously increasing at a rate of 15%. The original bacteria count was 1000, and time, t, is measured in hours. 13. Write a model for the bacteria count in t hours. 14. What was the bacteria count in 3 hours? 15. What was the bacteria count in 6 hours? 16. What was the bacteria count in 9 hours? A $3500 investment is made into a retirement account that earns 8.5% interest. Find the account balance in 40 years for the given compounding period. 27. Compounded annually 28. Compounded quarterly 29. Compounded monthly 30. Compounded weekly 31. Compounded daily 32. Compounded continuously