Answers edited by Adam

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• If the velocity changes from 10 m/s to 12 m/s in one second, what is the acceleration?
  
• What is the distance between `(1, 4)` and `(–3, –2)`?
  
• What is the distance between `(7, 4)` and `(10, 8)`?
  
• What is the slope of any line perpendicular to the line passing through `(30,39)` and `(18,10)`?
  
• How do you solve for a in `sqrta + 9 = b + 3`?
  
• What is the volume? and how to change the unit of the following question? I'm not sure about the (b) part.