Question

For the following exercises, use this scenario: The population of a city has risen and fallen over a 20-year interval. Its population may be modeled by the following function: y=12,000+8,000sin(0.628x), where the domain is the years since 1980 and the range is the population of the city.. Over this domain, when does the population reach 18,000? 13,000?

Answer 1

The answer would be 294762