Answer: 3 days
Explanation:
First, convert 2 1/4 from a mixed number to a fraction. This can be done by multiplying 2 and 4 and adding 1. 2*4 = 8+1 = 9. Currently, Jeremiah has 9/4 cans of dog food.
Now divide 9/4 by 3/4. To divide fractions, flip one fraction over and multiply to get the equation 9/4 * 4/3. The 4s in both the numerator and denominator cancel out, leaving you with a fraction of 9/3.
Divide 9 by 3 to get a final answer of 3 days.