PSAT Reasoning Student-Produced Responses




 







Question 1: If f(x) = x + 1, what is the value of x that satisfies f(x2) = f(x) + x2?
  


Question 2: How many different numbers between 250 and 400 have 2 as the tens digit?
  


Question 3:   Given 2x + 3y = 7 and y + 5z = 2, find 2x + 6y + 15z.
  


Question 4:   Given x > 0 and x2 = 1/3 + 2 + 2/5 + 19/15, find x.
  


Question 5:   If line l, described by the equation y = mx + n, is parallel to the x axis and passes through point (5,6), what is n?
  

Question 6:   Triangle ABC has the average of angles a and b equal to 50o. What is the value of angle c?


  


Question 7:   If 15% of x is 45,what is 20% of x?
  


Question 8:    | 3x - 2 | = 8      | x + 1 | = 1


What value of x satisfies both equations above?
  


Question 9:   The area of a sector of circle C is one sixth of the area of the circle. What is the radius of the circle if the area of the sector is 6¶ ?
  


Question 10:   What is the value of (5x + 2 - 5x) / (5x - 5x - 2) ?
  




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