A river has an initial minnow population of 40,000 that is growing at 5% per year. Due to environmental conditions, the amount of algae that minnows use for food is decreasing,
supporting 1,000 fewer minnows each year. Currently, there is enough algae to support 50,000
minnows.
1) Is the minnow population increasing linearly or exponentially?
2) Is the amount of algae decreasing at a linear or an exponential rate?
3) In what year will the minnow population exceed the amount of algae available?
Using a calculator, Joanna made the following table and then made the following conjecture: 3x is always greater
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