Exercises: Write Arithmetic and Geometric Sequences Recursively and Explicitly

Work through each section in order. For any sequence, always verify your formula by computing the first term.

Grade 9·21 problems·~28 min·Common Core Math - HS Functions·group·hsf-bf-a-2

Work through problems with immediate feedback

Fluency Practice

A car worth $24,000 depreciates 20% per year. Which explicit formula gives its value after $n$ years?

$a_n = 24000 \cdot (0.2)^{n-1}$

$a_n = 24000 - 20n$

$a_n = 24000 \cdot (0.8)^{n-1}$

$a_n = 24000 \cdot (0.8)^n$