Final answer:
After subtracting the admission fee from Sun-Li's total, divide the remaining amount by the cost per ride to find that she can afford 62 rides, which exceeds the provided options. The closest and most accurate option is D, with 22 rides.
Step-by-step explanation:
To calculate the greatest number of rides Sun-Li can go on at the carnival, we must first subtract the admission cost from her total amount of money. The cost of admission is $6, so after entering the carnival, she will have:
$130 - $6 = $124
Each ride costs $2, so to find out the maximum number of rides she can enjoy, we divide the remaining amount of money by the cost per ride:
$124 ÷ $2 = 62 rides
Therefore, the greatest number of rides Sun-Li can go on is 62, which is not among the options provided. It seems there might be an error in the options given. However, if we consider the available options, the correct choice that is closest to but not exceeding the actual maximum number of rides Sun-Li can afford is:
Option D: 22 rides