ITown is a large computer discount store that sells computers and ancillary equipment and software in the town where State University is located. It has collected historical data on computer sales and printer sales for the past 10 years as follows:

I can not figure out letter B. PLEASE SHOW ALL WORK!

12.41 ITown is a large computer discount store that sells computers and ancillary equipment and software in the town where State University is located. It has collected historical data on computer sales and printer sales for the past 10 years as follows: YEAR PERSONAL COMPUTER SALES PRINTERS SOLD 1 1045 381 2 1610 579 3 860 312 4 1211 501 5 975 296 6 1117 415 7 1066 535 8 1310 592 9 1517 607 10 1246 473 a. Develop a linear trend line forecast to forecast printer demand in year 11. b. Develop a linear regression model relating printer sales to computer sales to forecast printer demand in year 11 if 1500 computers are sold. c. Compare the forecasts developed in parts 12.410. and 12.41b. and indicate which one appears to be the best