According to data from the U.S. Department of Education, the average cost y of tuition and fees at public four-year institutions
in year x is approximated by the equation
y = 0.024x* -0.87x + 9.6x² +97.2x + 2196
where x = 0 corresponds to 1990. If this model continues to be accurate, during what year will tuition and fees reach $4000?
a. 2000
C. 2016
b. 2010
d. 2004
