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The population P of a certain culture is expected to be given by a model
where r is a constant to be determined and t is a number of days since the original population of 100 was established. Find the value of r if the population is expected to reach 200 in 3 days.
P=200 and t=3
Take the natural log of both sides:
Use this rule to rewrite the equation:
Remember this rule
You need a scientific calculator for that.
Round off to wherever your asked.