Answer: B. 1 1/2 batches
Explanation:
Convert 4 1/2 to an improper fraction by multiplying 4 by 2 and adding 1. 4*2 = 8+1 = 9. Jerome made 9/2 batches of granola.
Multiply this by 1/3 to find out how much was given to his math teacher. 9/2 * 1/3 = 9/6. Convert to a mixed number to get 1 3/6, which can be reduced to 1 1/2 batches.