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Review: Cube Roots
Explanation
The question asks us for the cube root of z, which is
or
. Let's evaluate the data statements separately.
Statement (1) tells us that
We can take both sides of the equation to the
power in order to try to massage this equation to
give us what we are looking for:
So, we've been given exactly what we are looking for: the
value of
. It's equal to
. Therefore, Statement (1) is sufficient. Statement
(2) is sufficient according to identical logic.
The correct answer is (D).
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