Pl help The population of the United States from 1970 to 2010 can be modeled by a function where P(t) is the population (in millions) and t is the time in decades since 1970. Some values for this function are shown in the table. (Note: t=0 represents 1970.) What was the average rate of change, in millions of people per decade, in the U. S. population from 1970 to 2000? Round to the nearest whole number.