A well-educated lumberjack decides to use linear regression to predict the demand for firewood based ...

A well-educated lumberjack decides to use linear regression to predict the demand for firewood based on the ambient temperature.
 
  He has collected data on firewood sales and temperature for the last several days and has performed some preliminary calculations as shown in the table. What is his regression equation based on the data?
 
   Temp Ricks Temp Squared Temp   Ricks
   33 17 1089 561
   19 32 361 608
   34 20 1156 680
   34 18 1156 612
   20 33 400 660
   24 30 576 720
   17 34 289 578
   30 25 900 750
   38 16 1444 608
   23 29 529 667
  Sums 272 254 7900 6444
 
  A) Ricks = 50.6 - 0.93  Temp
  B) Temp = 53.3 - 1.0  Ricks
  C) Ricks = 0.93 - 50.6  Temp
  D) Temp = 1.0 - 53.3  Ricks