Question 150451
{{{f(x)=(18-4x)^2}}} Start with the given function.



{{{f(3)=(18-4(3))^2}}} Plug in {{{x=3}}}.



{{{f(3)=(18-12)^2}}} Multiply 4 and 3 to get 12



{{{f(3)=(6)^2}}} Subtract 12 from 18 to get 6



{{{f(3)=36}}} Square 6 to get 36