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Advanced MathEasy–MediumEvaluating exponential growth in context

Advanced Math practice question

A culture's population is modeled by P(t) = 500 · 3ᵗ, with t in days. What is the population at t = 2?

Answer: 4500

P(2) = 500 · 3² = 500 · 9 = 4500.

Common wrong answers

If you answered 1500
1500 is P(1); the model asks for day 2.
If you answered 3000
3² = 9, not 6: the population triples each day, twice over.
If you answered 9000
500 · 9 = 4500; doubling 4500 would be a day too far.

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