Answers edited by vanessa

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• How to find the inverse of #x^(2)-x-2#?
  
• How do you solve #\frac { z + 29} { 2} = - 8#?
  
• How do you convert 1.3 into a fraction and percent?
  
• Jack spends 1 4/5 as long on his homework as Jill. Last week Jill spent 9 3/4 hours doing homework. How long did Jack spend doing homework?
  
• How do you combine like terms in #(2x ^ { 2} + 9x - 5) + ( 5x ^ { 2} + 7x + 13) - ( 7x ^ { 2} - 18)#?