Final answer:
The equation that justifies why 9 ¹/₃ = 3√9 is (9 ¹/₃)³ = 3³ = 27 = 9.
Step-by-step explanation:
To justify why 9 ¹/₃ = 3√9, we can use the rule for cubing exponentials. We can rewrite 9 ¹/₃ as (3³)¹/₃ = 3^(3 * ¹/₃) = 3.
Therefore, the correct equation is:
(9 ¹/₃)³ = 3³ = 27 = 9.