Given the geometric sequence $$5, -15, 45, \dots$$ , find th...

Question Analysis
This question requires students to use the explicit formula for a geometric sequence to find a specific term, specifically the 7th term.

Key Concept Explanation
The explicit formula for the -th term of a geometric sequence is (), where is the first term, is the common ratio, and is the term number.

Step-by-step Solution
1. Identify the first term :