Address on the envelope

Jana helped mom write the addresses on the envelopes. It took her 3 minutes to write the first address and only 2 minutes to write each other. How many minutes will it take her to list the addresses (including the first one) if she works at this rate?

Correct answer:

x = min 2n+1

Step-by-step explanation:

$$\begin{gathered} x=3+2(n-1) \\ x=3+2n-2 \\ x=2n+1 \end{gathered}$$

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