Final answer:
The value of x if V81 = 3 is found by calculating the cube root of 81, which is 27, making the correct answer option B (27).
Step-by-step explanation:
The question asks to find the value of x if V81 = 3. Since V could represent the cubic root function, this implies √81 which means 'the cube root of 81'. To find the cube root of 81, we would look for a number that, when multiplied by itself three times (cubed), gives the product 81. The number that satisfies this condition is 3³ or 3 x 3 x 3 which equals 27. Therefore, x should be 27. Looking at the options provided, option B (27) is the correct answer.