Question

Ginny is studying a population of frogs. She determines that the population is decreasing at an average rate of 3% per year. When she began her study, the frog population was estimated at 1,200. Which function represents the frog population after x years?

Answer 1

1,200 - 0.97x = population/year

Step-by-step explanation:

Decreasing at an average rate of 3% per year is also the same as saying 0.97 * a year. Since x represents years, this can be 0.97 * x, or just 0.97x. Now, since the beginning population was 1,200 and the population is decreasing, just subtract the new population per year by the original population, and equation equal to this is: 1,200 - 0.97x = population/year