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A spider climbs a wall marked like a number line. Each day it climbs up 4 units but each night slips down 1 unit. Starting at 0, at which integer is it at the end of the 3rd day (after that day's climb, before that night's slip)?

Class 6Integers on the Number LineIntegers
  • A20
  • B9
  • C11
  • D10

Step-by-Step Solution

End of day 1: 0 + 4 = 4. Night 1: 4 - 1 = 3. Day 2: 3 + 4 = 7. Night 2: 7 - 1 = 6. Day 3: 6 + 4 = 10.
Answer: D) 10

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