Answer:
Part A: 18
Part B: Missing information
Part C: 1.62 Missing information
Explanation:
For part A, you have to multiply 1/4 x 72 because 72 is how many servings of one box, and 1/4 is the amount needed to make 1 serving, which is 1/4 cups.
For Part B, I sadly can not answer because the table is needed to solve it, and was not included
For Part C, 1/4 of 6.48 could help us because it can give us the amount needed to cost to buy enough mix for one serving but not how many biscuits. So it's less than 1.62
Hope this helps a bit.