As, (f-g(4))= f(4)-g(4)
As, f(x)= 4x+2
f(4)= 4(4)+2= 18
also,
g(x)= 3x-1 = 3(4)-1= 11
So, (f-g)(4)= f(4)-g(4)= 18-11
Hence ,
(f-g)(4) = 7
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