Write a system of equations to describe the situation below, solve using substitution, and fill in the blanks. Underwood's Mail Manufacturing is a company that produces chain mail. Their most popular product is saw-cut metal links that hobbyists can use to make their own creations. The company recently spent $554 on advertising, which they hope to make back quickly. The wire used to produce one ounce of links costs $1, but the finished links sell for $2 per ounce. Eventually, the company will make back its investment and break even. What will their expenses and sales both equal? How many links must be sold? The company's expenses and sales will both total $ once they have sold ounces of links.