fit a model that includes term, format and midterm as explanatory variables for the response variable final. a. (1 point) provide the r output of the model. b. (2 points) state the least squares regression equation of your model. c. the model without the variables term and format has an adjusted r2 value of 0.1274. a. (1 point) does including the variables term and format improve the fit of the model? b. (1 point) interpret the adjusted r2 value for the model that includes all three explanatory variables.