An electronics store sells two popular models of wireless headphones, model A and model B, The sales of these products are not independent of each oher (in economics, we call these substitutable products because if the price of one incroases, sales of the other will increase). The store wishes to establiah a pricing policy to maximize reventue from these protucts. A stucy of price and sales data shows the following relationships between the quantity sold (N) and prices (P) of each model. NA=180.59PA+0.3gPPgNB=31+0.09PA0.58PB Develop a spreactheet for calculating the total revenue if PA=$17 and PB=$25. Design it so that the price-demand function paramesers cas easily be changed. Complote the spreadsheet below