Which expression represents the phrase, "one third the sum of 12 and a number"?

Let

x--------> the number

we know that

1) the phrase, "the sum of 12 and a number"

represent the expression -------->

and

2) the complete phrase, "one third the sum of 12 and a number"

represent the expression -------->

therefore

the answer is

your question is incomplete, write all the numbers in the sequence that it tells you.  

step-by-step explanation:

[2, 2.5)

(2.5, 3]

step-by-step explanation:

i think its these two not sure [2, 2.5)

(2.5, 3]