Which function represents the total cost of a \10flatfeeplusflat fee plusflatfeeplus$2peritemper itemperitemx$?
f(x)=10+2xf(x) = 10 + 2xf(x)=10+2x
f(x)=2+10xf(x) = 2 + 10xf(x)=2+10x
f(x)=12xf(x) = 12xf(x)=12x
f(x)=10x2f(x) = 10x^2f(x)=10x2