7. In 2000 (year 0), a the US population was 282 million people. By 2010 the population had grown to 309 million people. Assume the population is changing linearly. Use appropriate units when reporting answers. Determine the function for the population, P, of the US t years after 2000. 7. In 2000 (year 0), a the US population was 282 million people. By 2010 the population had grown to 309 million people. Assume the population is changing linearly. Use appropriate units when reporting answers. Determine the function for the population, P, of the US t years after 2000