The population of the United State reached approximately 300 million by the year 2010. From 2010 to 2050, the population is expected to increase by about 2.5 million per year. A write an equation to find the population p for any year X from 2010 to 2050. B graph the equation on the grid at the right. C find the population in 2050

Step-by-step explanation:

Let y represent the population in millions, and x represent the number of years after 2010.

Then for x=0, y = 300. The rate of change is given as 2.5 million per year, so a suitable formula is ...

  y = 300 +2.5x

Then in 2050, 40 years after 2010, the population is expected to be ...

  y = 300 +2.5(40) = 400 . . . million