Problem: In 1963, postage was 5 cents per ounce. In 1981, postage was 18 cents per ounce.
Required:
Question 1: Establish a linear model which can be used to estimate the postage per ounce based upon the year (or you can use the number of years since 1963.)
Question 2: If the trend had continued through to today, what would the postage per ounce be?