Question 941256

{{{f(x)=x+ax}}} and {{{a=7/2}}},then 

{{{f(3/2)=(3/2)+(7/2)(3/2)}}}

{{{f(3/2)=(3*2/2*2)+21/4}}}

{{{f(3/2)=6/4+21/4}}}

{{{f(3/2)=27/4}}}