Final answer:
To convert the number of gallons used to quarts, you multiply the number of gallons by 4. Therefore, the restaurant used 34 quarts of olive oil during the week.
Step-by-step explanation:
First, notice that gallons are larger than quarts. You are moving from a larger unit of measure to a smaller unit of measure. This means you will need to multiply. There are 4 quarts in a gallon, so your conversion factor is 4.
Now, multiply. Take the given number of gallons and multiply by 4.
8(1/2) x 4 = (17/2) x (4/1) = 68/2 = 34
The answer is 8(1/2) gallons - 34 quarts.