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4 years ago

Which equation represents a population of 320 animals that decreases at an annual rate of 19% ?

Mathematics

1 answer:

dsp734 years ago

6 0

<h3>Answer: Choice B. p = 320(0.81)^t</h3>

Use the ^ symbol to indicate exponents. So for instance 4^2 = 4 squared.

A decrease of 19% means we have r = -0.19 and 1+r = 1+(-0.19) = 0.81 as the base of the exponent. A decrease of 19% means the population retains 81% each year.

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