Complete the Modeling: d. Refer to your answer to part (a) when total revenues were $105,000. Calculate the rm's operating income (or loss) if the unit selling price and variable expenses do not change, and total revenues: 1. Increase $15,000 Incremental Revenue * CM Ratio = Total Incremental Contribution Margin * = Current Operating Income New Operating Income 2. Decrease $10,000 Incremental Revenue * CM Ratio = Total Incremental Contribution Margin * = Current Operating Income New Operating Income