Can you do 15 to 19 and can you show me how you did it step by step on a sheet of paper?

15. Kimberly invested $4000 in her saving account for 7 years. When she withdraw it, she had $4633.43. The interest was compounded continuously. What was the interest rate on the account? Round answer to nearest tenth of a percent. 16. In 1990 the population of a small country was estimated to be 4 million. For any year the populations is 240 modeled by this logistic equation: P (t) = 5+54.99 - 0208t , where t is the number of years since 1990. Estimate the year the population will be 21 million. 17. The Richter scale converts seismographic readings into numbers for measuring the magnitude of an earthquake, XO M(x), according to this function: M (x) =log-, where X=10 . What is the magnitude of an earthquake whose seismographic reading is 7.6 millimeters? Round answer to four decimal places. 18. The formula d=8 e can be used to find the number of milligrams d of a certain drug in a patient's bloodstream h hours after drug is given. When the number of milligrams reaches 3, the drug is given again. What is the time between injections? 3 4 View as Text Download