Tristan is an artist who creates both small metal sculptures and stone carvings. In Tristan's first month of online sales, he sold 3 small metal sculptures and 4 stone carvings and made a profit of $275.07. The second month of online sales, he sold 3 small metal sculptures and 7 stone carvings and made a profit of $422.58. Tristan needs to buy new supplies and wants to put some money in a business savings account. For the next 4 months he decided to only buy supplies for the art form for which he earns the most profit.