Practice Prob 3). The model to the right, although more complex than the models in Problems 1 and 2, is a very simple Income/Loss Statement for a manufacturing business. There are many simplifications in this model, but it is a very useful tool for analyzing profitability when numerous variables need to be considered. The model assumes that the variable values are known (deterministic), but this does not restrict us from asking numerous important "What-If" questions. a) Build the model to calculate net income in the cells provided. (Note the various tax rates for EBT.) b) Create a one-way data table of Sales Units vs. Net Income. Start sales units at 10,000 and end at 20,000, and increase in increments of 1,000. c) Graph the data table information with a line graph that performs a break-even analysis. "Eye- Ball" the number of sales units that occurs at breakeven. d) Use Goal Seek to find the exact value of sales units at breakeven