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.

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.