18 points and will mark brainlies!

Answer:
6 more times
Step-by-step explanation:
If he already walked the dog 5 times, he earned $40 because 8*5 = 40.
To find how much more money he needs to make, do 88 - 40 = 48.
To find how many more times he needs to walk the dog, do 48/8 = 6.