Final answer:
Claudia needs 7 1/4 yards of fabric.
Step-by-step explanation:
To find out how much fabric Claudia needs, we can subtract the amount she already has from the amount needed for the banner. Claudia needs 3/4 of a yard to make the banner and she already has 8 yards, so we can subtract 3/4 from 8.
8 - 3/4 = 7 1/4 yards
Therefore, Claudia needs 7 1/4 yards of fabric.