Algebra-1

Question Analysis
This question tests the student's understanding of the product rule for exponents, which states that when multiplying powers with the same base, you add the exponents.

Key Concept Explanation
The product rule for exponents is a fundamental concept in algebra. It simplifies expressions by combining the exponents of the same base.

Step-by-step Solution
1. Identify the bases and exponents: The base is and the exponents are 9 and 4.
2. Apply the product rule: Add the exponents: