John's age is 9 more than three times Rick's age. Which expression represents this?

y = 9 + 3x.

Step-by-step explanation:

Given : John's age is 9 more than three times Rick's age.

To find : Which expression represents this.

Solution : We have given John's age is 9 more than three times Rick's age.

Let the age Rick = x

According to question:

3 times the age of Rick = 3x.

Let the John age = y.

y = 9 + 3x. (plus sign for more than).

Therefore, y = 9 + 3x.

Let's represent john with the variable (j) and rick with (r):

j = 3r + 9