Suppose u={,-2,-1,0,1,2,} is the universal set and r={,-1,1,}. what is r'?

a.{-2,0,2}
b.{,-2,0,2,}
c.{,-2,2,}
d.{-4,-2,2,4}

   .<><><><><><><><><><><><><><><>.    :)

Answer: the correct answer is 10step-by-step explanation: let the number be n, then the expression becomes,then“twelve more than the quotient of a number and two, decreased by four” iswhen n=4,we substitute 4 whetever we see n to get,we simplify to obtain,we further simplify to get,therefore the correct answer is c.