Answers edited by Alexander A.

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• What are the important points to graph #y=3cos x#?
  
• A store offers 40% off its merchandise. What is the discount on a $68 outfit?
  
• How do you find the slope & y-intercept of the equation #y = -3x + 9#?
  
• What is the equation of the line between #(12,23)# and #(9,64)#?
  
• If a #1 kg# object moving at #10 m/s# slows down to a halt after moving #50 m#, what is the coefficient of kinetic friction of the surface that the object was moving over?
  
• How do you convert -315 degrees to radians?
  
• Question #0e9a3
  
• Question #109a9
  
• Is hydrogen an acid or a base?
  
• How do minerals form by evaporation?