The Camera Shop sells two popular models of digital single lens reflective (DSRL) cameras. The sales of these products are not independent; if the price of one increases, the sales of the other increases. In economics, these two camera models are called substitutable products. The store wishes to establish a pricing policy to maximize revenue from these products. A study of price and sales data shows the following relationships between the quantity sold (N) and price (P) of each model. NA = 165 0.7PA + 0.55PB NB = 332 + oospA 0.7PB Construct a model for the total revenue and implement it on a spreadsheet. What is the profit (in dollars) predicted by your model when the price of model A is PA = $250 and the price of model B is PB = $330. $:l