a 6.5-pound bag of modeling clay costs $7.80. what is the price per pound, in dollars and cents?

7.80/6.5=1.2 per pound

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.