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9. Lanie has decided to add strength training to her exercise program. Her trainer suggeststhat she add weight lifting for 5 minutes during her routine for the first week. Each weekthereafter, she is to increase the weight lifting time by 2 minutes. How many minuteswill she be devoting to weight lifting in week 10?

Respuesta :

We can identify the sequence, since Lanie starts with 5 min and increases by 2 every week, therefore, a possible sequence identification would be:

[tex]\begin{gathered} a_n=2n+3 \\ \text{Where:} \\ n=\text{Number of weeks} \\ n\in N \end{gathered}[/tex]

Evaluating the sequence for the week number 10 (n = 10):

[tex]a_{10}=2(10)+3=20+3=23[/tex]

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