Question

Sea f(x+3)=2x+1.entomces f(x) =

Answer 1

x+3 = a      

x= a -3          

f( x + 3 ) = 2x +1

       = 2( a - 3) +1

      = 2a - 6 +1

      = 2a -5

f(x) = 2x - 5