While working at the drugstore, Sam earns $9 per hour. How many hours will it take Sam to earn $18? Write your result in the spa
1 answer:
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Answer:
The answer is C) .
Step-by-step explanation:
For a real number ,
.
In other words, multiplying a square root by itself gets rid of the square root.
How does this rule apply here?
.
Similarly,
.
That is:
.