College Graduates:

An equation to approximate the percentage of the U.S. population ages 25-34 with a bachelor's degree or higher can be given by the model P=0.3/8n + 30.5 , where n is the number of years after 2009.

a. According to the model, what percentage of the U.S. population ages 25-34 had a bachelor's degree or higher in 2009 (n=0)?

b. According to the model, what percentage of the U.S. population ages 25-34 had a bachelor's degree or higher in 2015 (n=6)?

c. According to the model, what percentage of the U.S. population ages 25-34 will have a bachelor's degree in 2020 (n=11)?

d. In which year will 50% of the U.S. population ages 25-34 have a bachelor's degree or higher? Round your answer to the nearest year.

e. According to the model, 100% of the U.S. population ages 25-34 will have a bachelor's degree or higher in 2192. Do you think this is reasonable? Why or why not?