1.
The amount Michelle earn is: 72
The portion she decided to donate is: 80%.
The expression to calculate the money she donated is,
[tex]\begin{gathered} 72\times\frac{80}{100}=72\times\frac{8}{10} \\ =\frac{576}{10} \\ =57.6 \end{gathered}[/tex]Thus, she donates $57.6 from her savings.
2.
The total students who voted for homecoming is: 960
The percentage of student voted for Allison is:60 %
The expression to calculate the number of students who voted for Alison is,
[tex]\begin{gathered} 960\times\frac{60}{100}=960\times\frac{6}{10} \\ =96\times6 \\ =576 \end{gathered}[/tex]Thus, the 576 students voted for Alison.