Answer:
3.1
Explanation:
To express a percent as a mixed number, we need to divide the percent by 100 and convert it to a mixed number.
Let's do this for each option:
310% = 310/100 = 3.1
3.1 can be written as the mixed number 3 1/10.
49% = 49/100 = 0.49
0.49 cannot be expressed as a mixed number because it is less than 1.
7.4% = 7.4/100 = 0.074
0.074 cannot be expressed as a mixed number because it is less than 1.
0.001% = 0.001/100 = 0.00001
0.00001 cannot be expressed as a mixed number because it is less than 1.
Therefore, the percentage that can be expressed as a mixed number is 310%, which is equivalent to 3 1/10.