(Program) A model of worldwide population growth, in billions of people, since 2000 is g...

(Program) A model of worldwide population growth, in billions of people, since 2000 is given\ by this formula:

Using this formula, write, compile, and run a C++ program to estimate the worldwide population in the year 2012. Verify the result your program produces by calculating the answer manually, and then use your program to estimate the world’s population in the year 2020.