easy · GMAT Quant
An express delivery service models the number of active delivery routes r_n on month n using the recurrence r_n = r_n-1 + 2 r_n-2 for all n ≥ 3. Given that r_1 = 3 and r_2 = 4
What is the value of r_5?
- 18
- 21
- 38
- 44
- 74
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