Answers edited by KB.

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• Out of 30 questions, Ahmad answered 12 them incorrectly. What percent of the questions did he answer correctly?
  
• The sum of one and the product of one and a number x ?
  
• How do you solve by substitution # y=3x# and #x+y=-5#?
  
• How do you write an equation in standard form with integer coefficients for the line with slope 17/12 going through the point (-5,-3)?
  
• If there are 20 values in a data set in order from smallest to largest, what is the median of the data set?
  
• One minus the product of four and a number x?
  
• If you invest $1500 at a rate of 7% per year, how many years will it take to earn at least $1050 in interest?