It would be 31+t.
Unless there's more to this question.
2/10 as a percent would be 20%.
If the 0 is in the numerator, the value is 0
if the 0 is in the denominator, the value is undefined
so 0/8 = 0
and 3/0 = undefined
Answer: 
Step-by-step explanation:
B is true.
I think E is also true.
