Question: 21 Hudson Marine has been an authorized dealer for C&D marine radios for the past seven years. The number of radios sold each year is shown.

Year 1 2 3 4 5 6 7

# Sold 35 50 75 90 105 110 130

A. Graph this time series. Does a linear trend appear?

B. Develop the equation for the linear trend component for the time series.

C. Use the linear trend developed in part (b) to prepare a forecast for sales in year 8.