The function P(x) = - 0.008x2 + 0.868x – 11.884 models the percentage of the U. S. population whose age is given by x that has earned an advanced degree (more than a bachelor’s degree). a. According to the model, what is the percentage of 27 years olds in the U. S. that have earned an advanced degree?
b. What is the age for which the highest percentage of Americans have earned an advanced degree?
c. According to the model, what is the highest percentage of Americans that have earned an advanced degree?