Which expression represents the algebraic phrase “nine times a number plus thirteen”? a. 9 - y + 13
b. 9 + y - 13
c. 9y + 13
d. 13y + 9

 The correct option is (C) 9y + 13.

Step-by-step explanation:  We are given to select the expression that represents the following statement :

“nine times a number plus thirteen”

Let the number be represented by y.

Then, nine times the number is written as follows :

Since we are to add 13, so the final expression is given by

Thus, the required expression is

Option (C) is CORRECT.