Macys sells shoes and belts. The store makes a $5 profit on the sale of shoes (x), but loses $4 on the sale of each belt (y). The store wants to make a profit of at least $20 from the sale of shoes and belts. They also sell t-shirts and sweaters. They make a $6 profit on the sale of t-shirts (x), and a profit of $4 on the sale of each pair of pants (y). The store wants to make a profit of at least $24 from the sale of t-shirts & sweaters.