Answer:
I believe it's 1.
Step-by-step explanation:
Well, what's the diffrence from 5/4 to 3/8?

so, if we take 5/4 to be the 100%, what is 7/8 off of it in percentage anyway?
A negative exponent just means that the base is on the wrong side of the fraction line, so you need to flip the base to the other side.
For example

or

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The answer is "D"
Seven halves would equal to 3.5 wholes. What you do is divide 7 by 2 to find out how many wholes their are.