Answers edited by Alberto M.

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• How do you graph the quadratic function `y=-x^2+2x+4`?
  
• How do you evaluate `arcsin 0`?
  
• How do you solve by substitution `x - 5y=10` and `-2x+y=7`?
  
• How do you solve `sqrt(x+3)-sqrt(x-1)=1`?
  
• Question #ddee6
  
• Can someone help with this question?
  
• What is the range of the function `h(x) = 1 /(x^2 - 9)`?
  
• Question #1cabe
  
• How do I find the extraneous solution of `sqrt(x-1)=x-7`?
  
• What is the domain and range for `y = sqrt(x-3)`?
  
• What is the limit as x approaches infinity of `ln(x)`?
  
• How do you find the nth partial sum, determine whether the series converges and find the sum when it exists given `ln(4/3)+ln(9/8)+ln(16/15)+...+ln(n^2/(n^2-1))+...`?
  
• Question #e4066
  
• How do you write the equation if F varies inversely as the cube root of S and S = 64 when F = 4?