Answer:
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Step-by-step explanation:
Answer: y3/xz
Step by step is provided in the screenshot below
Part A = She incorrectly add 1 (4/4) with 3/4, so instead of getting 7/4 she got 8/4.
Part B=She needs 28/4 (7) cups for 4 batches because 4/1x7/4=28/4.
C(25,10)= 3268760
P(25,10)=11861676288000
hope it helps but these are very big numbers :d