beginning of content:
SAT Subject Test
A number is increased by
. If the cube root of that result equals
, what is the
value of
Select an Answer
Correct Answer:
No
Correct Answer:
No
Correct Answer:
Yes
Correct Answer:
No
Correct Answer:
No
View Correct Answer
The correct answer is C.
One way to determine the value of is to create and solve an algebraic equation. The phrase “a number
is increased by
” is represented by the expression
, and the cube root of that result is equal to
, so
. Solving for
gives
, and so
.
Alternatively, one can invert the operations that were done to . Apply the inverse of each operation, in the reverse order: First cube
to get
, and then decrease this value by
to find that
.
Question Difficulty:
easy