Question 8 • Advanced Financial Algebra
An arithmetic sequence can be written as aₙ = a₁ + d(n − 1), where a₁ is the first term and d is the common difference. Cruz’s first distance is 3.2 kilometers and he adds 0.2 kilometer each day, so aₙ = 3.2 + 0.2(n − 1). This is choice B, and it gives 3.2 kilometers when n = 1.
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