Answer:
8 days
Step-by-step explanation:
If the frog crawls up 4 feet and slips back 2 feet, then it will crawl...
4-2 = 2 ft each day
Let x be the amount of days it'll take for the frog to reach the top of the well given he crawls 2 feet each day:
2x=18
Divide both sides by 2
x=9
But, at 7 days, the frog will already have crawled 14 feet. This means that on the 8th day, the frog will crawl 4 feet and reach the top of the well before he slips back down. Therefore the answer is 8 days
