In the year 2000, the population of virginia was about 7,400,000. after 2000, the population of virginia grew at a rate of 5.4%. the function f(x)=7,400,000(1.054)^x gives the population x years after 2000.

is the population growing or decaying?
at what rate is the population increasing or decreasing?
what does the 7,400,000 represent?.

1 answer

  1. Is the population growing or decaying? The population of Virginia is growing because the function \( f(x) = 7,400,000(1.054)^x \) models exponential growth. An exponential growth function is characterized by a base greater than 1 (in this case, \( 1.054 \)), indicating that as \( x \) (the number of years after 2000) increases, the population will also increase.

  2. At what rate is the population increasing or decreasing? The population is increasing at a rate of 5.4% per year. This rate reflects the annual growth factor of 1.054 in the function, which means that each year, the population grows by 5.4% of its population from the previous year.

  3. What does the 7,400,000 represent? The value \( 7,400,000 \) represents the initial population of Virginia in the year 2000. It is the starting point (or y-intercept) of the exponential growth function, indicating the population at \( x = 0 \) (the year 2000).