The verbal phrase "the quotient of 3 more than a number and 5" can be modeled as follows:
quantity 1 ÷ quantity 2
what words in the phrase represent quantity 1? translate these words into an algebraic expression using n for the variable.

When it reads "the quotient of 3 more than a number and 5" it is separated as follows:
"the quotient of [3 more than a number] and [5]"
Therefore Quantity 1 is 3 more than a number and Quantity 2 is 5.

You can replace "a number" with a variable (they want you to use n in this case):
3 more than n
Which is the same as saying: 3 + n

Hope this helps! :)