Answers edited by Pris

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• How do you factor by grouping: #r^2 - 20tw + 4wr - 5tr#?
  
• How do you simplify #sqrt((63a)/(128a^3b^2))#?
  
• What is the slope of the line given by the equation #y = -7x - 2#?
  
• How do you simplify expressions #8+(9t+4)#?
  
• Which tuning fork would sound lower: a tuning fork with a frequency of 512 or one with a frequency of 128?
  
• How do you solve #x-15=28#?
  
• How do you identify the slope for #3y= x -1/2#?
  
• How do you find the vertex of a parabola using the axis of symmetry?
  
• How do you factor #8x^3 - 1#?
  
• What is the prime meridian?
  
• How do you simplify #16^(-3/4)#?
  
• What is the point slope form of a vertical line?