Answer:

Explanation:
We need to transform the statement into a math expression.
"Fifteen is the same" means, the number 15 and the equal sign.
"The product of 3 and a number" means, we have to expresses a multiplication between 3 and a variable that could be x.
Then, we put all to together

"Fifteen is the same as the product of 3 and a number".
Therefore, the equation that models the sentence is
