Tuition has risen every year since 1980 and at the same time enrollment has steadily increased. Please use the S-D model to explain why tuition keeps rising.

1. Tuition has risen every year since 1980 and at the same time enrollment has steadily increased. Please use the S-D model to explain why tuition keeps rising.

Tuition (thousands of 2010 dollars per year) 40 30 21 15 10 10 Dol 10 16 21 30 40 Enrollment (millions) Figure 2 The Market for College Education