Algebra-1

Question Analysis
This question tests the student's ability to simplify an expression involving negative exponents in a real-world context by applying the rules of exponents.

Key Concept Explanation
The key concept is that when dividing powers with the same base, you subtract the exponents. Additionally, a negative exponent can be rewritten as a positive exponent by moving it to the denominator or numerator.

Step-by-step Solution
1. Simplify the fraction:
2. Apply the exponent rule for division: