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Tamika sells magazines door to door. On her first day, she sells 12 magazines. She intends to sell 5 additional magazines each day. If she meets her goal, how many magazines will she have sold in 27 days

Sagot :

we have the following:

[tex]\begin{gathered} a_1=12 \\ a_n=a_1+d\cdot n \\ a_{10}=12+5\cdot n=12+135 \\ a_{10}=147 \end{gathered}[/tex]

therefore, the answer is 147 magazines

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