San Diego is one of the largest cities in the United States. In 2012, the population of San Diego was 1,309,000. By 2016, the population had grown to 1,375,000, and reached 1,386,000 in 2020.
(a) What was the growth rate (k) from 2012 to 2016?
(b) What was the growth rate (k) from 2016 to 2020?
(c) Compare the growth rate from each period.
(d) If the current growth rate continues, when will the population of San Diego reach 1.5 million?