16000 15000 14000 13000 12000 11000 10000 9000 8000 7000 6000 5000 4000 5 FA 10 15 20 25 A quadratic model C t for the cost of tuition at a small private college in dollars for t years since 1990 is C t 8 28t 269 05t 3500 Find the equation of the tangent line for tuition in 2017 y mt b where m The tangent line estimate for tuition in 2017 is and b n M