Final answer:
The expression that represents the cost of going to the amusement park and riding r rides is 12 + 3r.
Step-by-step explanation:
The expression that represents the cost of going to the amusement park and riding r rides is:
12 + 3r
Let's break down the expression:
- 12: This represents the initial cost of getting into the amusement park, which is $12.
- 3r: This represents the cost of each ride, which is $3, multiplied by the number of rides, r.
So, to find the total cost of going to the amusement park and riding r rides, you would add $12 to $3 multiplied by r.