#7 The average annual cost of tuition, room, and board for
public colleges and universities has been growing
exponentially by 6.17% each year since the year 1981.
The average cost of tuition, room, and board in 1981
was $2665.32.
a. Write an exponential function that can be used to
model the average cost of tuition, room, and board as a
function the number of years past 1981.