During the past 5 years there has been an inflationary trend…

During the past 5 years there has been an inflationary trend. Listed below is the average cost of a gallon of milk for each year. 1981 1982 1983 1984 1985 $1.10 $1.23 $1.30 $1.50 $1.65 Assuming a linear relationship exists, and that the relationship continues unchanged through 1986, what would you predict for the average cost of a gallon of milk in 1986?