The population of a city increases by 4,000 people each year. In 2025, the population is projected to be 450,000 people. What is an equation that gives the city’s population p (in thousands of people) x years after 2010?

Question

anonymous · Answer

If population in 2025 is 450 (in thousands) 
15 years prior (2010, it is 450 - 15(4) or 390 
now in years (p) after this date population increases 4 (in thousands) times the number of years. 
so formula would be p = 390 + 4p 

Hope this helps!