We need which expression represents 3 7/10
Look at the last answer, we have
[tex]\frac{10}{10}+\frac{10}{10}+\frac{10}{10}+\frac{1}{10}+\frac{1}{10}+\frac{1}{10}+\frac{1}{10}+\frac{1}{10}+\frac{1}{10}+\frac{1}{10}[/tex]Since 10/10 = 1, and there are 7 of 1/10, then
[tex]1+1+1+7(\frac{1}{10})[/tex]1 + 1 + 1 = 3
[tex]3+\frac{7}{10}=3\frac{7}{10}[/tex]The answer is D
