Answer:
6 more times
Explanation:
To earn enough money to buy a game that costs $88, Ivan needs to earn 88 / 8 = 11 times his dog walking fee.
He already walked the dog 5 times, so he still needs to walk the dog
11 - 5 = 6 more times.
Therefore, Ivan needs to walk the dog 6 more times to earn enough money to buy the game.