a. The table above gives the average salary as end-of-year data. Align the input as years since the end of 1970. Find the best-fitting logarithmic model for the information given in the description. Define the model completely. b. Use the logarithmic model to estimate the average salary in 1993. What does the logarithmic model predict for the average salary in 2000 ? Which of the estimates is an extrapolation and which is an interpolation? Which of these estimates should we expect to be more accurate? c. Why didn't we align the input data to years since 1980