Continuation of the above question.

B) Develop an interaction term to model the effect one variable dependent on another variable. An interaction term is defined by X3 = X1 * X2. In this case, try an interaction term with Townhouse*Lot cost. Add the interaction term to your existing model and check p-values. Drop the unnecessary variables. C) Using the final model, find out the predicted price for either a single family home or a townhouse with a lot cost of $30,000