18. The population of a particular country was 18 million in 2005. In 2012, it was 22 million. The exponential growth function A = 18ell describes the population of this country t years after 2005. Find k for this model.

Determine the domain and range of the given function. the domain is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}. the range is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}.