A number is increased by . If the cube root of that result equals, what is the
Select an 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 .