Answer Question 17 (1 point) A bacterial culture starts with 2000 bacteria. After 27 hours the estimated count is 16000. How many hours is the doubling period for this bacterial culture? Your Answer: Answer Question 18 (1 point) Saved How much would an investment of $1000 at 6% per annum compounded quarterly be worth in 3 years from now? MacBook ProQuestion 15 (1 point) A certain radioactive substance has a half-life of 15 days. How many days will it take until there is only 3.125% of the original amount remaining? Your Answer: Answer D View hint for Question 15 Question 16 (1 point) Saved The value of boat depreciates at a rate of 13% each year f the boat was originally worth $16 000, what will its value be after 9 years answer to the nearest dollar MacBook Pro