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four friends went shopping for school supplies the table shows the number of school supplies each Brown bought and the total cost complete the table to show the average cost of the school supplies each friend bought

four friends went shopping for school supplies the table shows the number of school-example-1

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Average cost = Total cost / Number of supplies


\begin{gathered} \mu=(T)/(n) \\ \text{For Rosa} \\ \mu=(29.91)/(3)=9.97 \\ \text{For }Ellis \\ \mu=(31.44)/(4)=7.86 \\ \text{For }Andie \\ \mu=(45.04)/(4)=11.26 \\ \text{For }Keondre \\ =(54.85)/(5)=10.97 \end{gathered}

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