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Question 8 A bacteria culture triples every 4 hours. What is the equation for the population P(t), if it starts at 200? P(t) = 200e" P(t) = 200(3) O P(t) = 200(3)4 P(t) = 200(3)** Question 9 The time required for an investment to double at an annual interest rate of 8% compounded continuously is closest to: 10.2 years 7.6 years 8.7 years 9.5 years Question 10 The value of an antique is decreasing exponentially. If it was worth $5, 000 five years ago and is now worth $3, 000, what is the annual decay rate? 8.5% 9.2% O 7.9% 10.3%