a. How many 4 year colleges and universities are there in the United States?
b. How many people are part time students in these schools in the most recent one year?
c. What is the total tuition across all full time undergraduate students across these institutions in the most recent one year?
d. What is the total tuition of all graduate students across these institutions?
e. What is the total dollar value paid of all text books purchased across all full time undergraduates across these institutions in the most recent one year?