Answers edited by Richard

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• The vertex of a parabola is (3,2). A second point on the parabola is (1,7). Which point is also on the parabola?
  
• What is 275,856 rounded to nearest hundred thousand?
  
• Two similar solids have a scale factor or 6:7 . What is ratio of their volumes, expressed in lowest terms?
  
• A rectangle has a perimeter of 48 ft. The length and width are scaled by a factor 1.5. What is the perimeter of the resulting rectangle?
  
• How do you convert 45,700 into scientific form?
  
• What is the evidence that Earth has changed a lot?