1 batch=2 1/2 cups of flour
3 1/2 batches= x cups of flour
1batch 3 1/2 batches
___________ = _____________
2 1/2 cups x cups
Cross multiply
1x=8 3/4
divide both sides by 1
x=8 3/4 cups
Answer= 8 3/4 cups of flour
You know that
.
Use the property
to state that

Then the expression
is equivalent to

Answer: correct choice is A.
The third answer would be correct
The number can be written as 4 tens 2 ones is 42