In the past, Maxwell's Coffee and Cakes competitor, Sammy's Best Cakes sold 10,000 mini cakes for $5 each. This year, Sammy's Best Cakes has made some new investments that she thinks will increase demand for her mini cakes. However, to cover her investments, she will now charge $8.12 for the first 7,870 cakes, $10.20 for the second 7,628 cakes and $14.09 for the last 4,162. Each cake costs $4.22 to produce. Assuming she meets her demand target, what will be her average revenue? Round to the nearest two decimals (0.00).

The owner of Maxwell's Coffee and Cakes wants to start selling products that feature her coffee shop's logo. Her first product will be backpacks which she will sell for $144.73 each. She can buy the backpacks for $21.59 and have them customized for $18.29 apiece. There is a one-time set up charge of $1,013.72 for customization. In order for the project to go forward, she needs to show a $11,519.32 profit. How many backpacks will she have to sell in order for this project to be acceptable? Round to the nearest whole number.

Maxwell's Coffee and Cakes sold 11,241 cups of coffee for $5.70 each. If the cost for each cup of coffee was $1.86, what was the average revenue for Maxwell's Coffee and Cakes? Round to the nearest two decimals (0.00).