Algebra-1

1. Current Range Calculation:  
  - Minimum value = 0 (since there are two dots at 0).  
  - Maximum value = 9 (since there are two dots at 9).  
  - Range = .  

2. Analyzing each option:  
  - A. 6 experiments: This does not extend beyond the current maximum or minimum, so the range remains 9.  
  - B. 3 experiments: There is a gap between 2 and 4, but it does not affect the range.  
  - C. 0 experiments: The minimum is already 0, so adding more students at 0 doesn’t change the range.  
  - D. 10 experiments: This would extend the maximum to 10, changing the range:  

   

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