Final answer:
The correct solution to the problem is 3√3. Ana likely made the error of cubing 3 instead of cubing 27.
Step-by-step explanation:
The correct solution to the problem is √27 = √(3^3) = 3^(3/2) = 3√3.
The error Ana likely made on the test was option A. Ana cubed 3. This is incorrect because √27 is not equal to 3^3.
To find the correct solution, Ana needs to simplify the expression √27 by factoring the number 27 as 3 * 3 * 3 and then taking the square root of each factor.
Learn more about Solving Square Roots