According to a survey, the population of a city doubled in 12 years. the annual rate of increase of the population of this city is approximately %. the population will grow to three times its current size in approximately years.

2.50%; 5.78%; 12%; 50%

18 years; 19 years; 23 years; 24 years

5.78%

19 years

Step-by-step explanation:

The Exponential Growth Model for  a population has the next formula:

where P(t) is the population after t years, is the initial population, i. e., when t = 0, and k is the annual rate of increase of the population.

From data we know that the original population is doubled after 12 years. Replacing in the formula we get:

or 5.78 %

If the population grows to three times its current size, then:

answerthe vertex form

step-by-step explanation: