Respuesta :

The miles Mary will swim in a week is,

[tex]N=2.5+3+4.4=9.9[/tex]

Then, the miles Mary will swim in 4 weeks is,

[tex]\begin{gathered} T=4N \\ T=4\times9.9 \\ T=39.6\text{ miles} \end{gathered}[/tex]

Therefore, Mary will swim 39.6 miles in 4 weeks.