Determine which description represents a proportional relationship. A farmer’s market sells different types of nuts in bulk. The cost of almonds is $7 per pound.

A craft store sells strings of glass beads. They cost $3 per string, or you can buy 3 strings for $8.

A craft store sells strings of glass beads. They cost $3 per string, or you can buy 3 strings for $8.

T-shirts at a store cost $15 each. If you purchase more than 2 T-shirts, you get a $3 discount on each T-shirt bought.,

A skateboard manufacturing company charges $75 per unit for an order of up to 100 skateboards, and $70 per unit for an order of 101–200 skateboards.