On day 1 he climbed 3 ft..at night he slipped back 2..on the second day he's starting at 1 ft ..he climbed 3 feet and then slipped back two..on the third day he's starting at 2feet then slipped back 2..on the fourth day he's starting at 3 feet..on the fifth he's starting at 4 feet...on the sixth he's starting at 5 feet..on the seventh he's starting at 6 feet..on the eighth he's starting at 7 feet..on the ninth he's starting at 8 feet..he just needs two feet on the ninth day