A watch is sold for $139 at a loss of $30. What was the original cost of the watch?
2 answers:
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The answer is C. 2.
This is because the part that is inside of the parentheses is equal to 4. Multiplying the fractions in the numerator is equal to .
, using the exponential rule 3/2-1/2=2/2 or 1. 4^1=4.
Now, we reduced the fraction, so all that is left is . This is equal to 2.
So your answer is 2.
I hope this helps :)