A town has a population of 20,000 and grows at 4.5% every year how long will it be in to the population is 42,800

It will take 17 years to get a population of 42,800.  (Specifically 17.3)

Step-by-step explanation:

We will use the equation

y = population

x = amount of years

y = 20000(1 + 0.045)^x

20000 is the original population.

(1 + 0.045) is the increase of 4.5% every year

angle efh= angle egh