Final answer:
The expression 3⁷ * 3⁻⁴ is equivalent to 3³.
Step-by-step explanation:
The expression 3⁷ * 3⁻⁴ can be simplified by using the rule of multiplying exponential terms with the same base. When multiplying exponential terms with the same base, you add the exponents. So, 3⁷ * 3⁻⁴ can be rewritten as 3^(7-4), which equals 3³. Therefore, the expression is equivalent to 3³.