Because of a State Budget Crisis a Publicly Supported College

Essay

Because of a state budget crisis a publicly supported college is being forced to raise more of its funds from private sources. Their tuition in September 2007 is $6,000; and over the next 5 years they must gradually raise their tuition until it becomes $9,000 in September 2012.
A) Find a linear formula for tuition, T, for any school year, s, during the period of tuition raises. Count school years, s, starting from 2007 as year zero.
B) What is the domain of the function?
C) What is the total tuition for a student starting in September 2008 and finishing in 4 years?
D) How much more would the total tuition be if the student started a year later and finished in 4 years?