Algebra-1

Question Analysis
This question tests the student's ability to use the explicit formula for an arithmetic sequence. The problem provides the first term () and the common difference (), and asks for the 15th term ().

Key Concept Explanation
The explicit formula for an arithmetic sequence is given by . This formula allows us to directly calculate any term in the sequence without needing to know the previous terms.

Step-by-step Solution
1. Identify the given values: ,

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