Question 640560
I'll do part A) to get you started


A)


{{{f(x)=-(2/3)x +3}}}


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


{{{f(3)=-(2/3)(3/1) +3}}}


{{{f(3)=(-2*3)/(3*1) +3}}}


{{{f(3)=(-6)/(3) +3}}}


{{{f(3)=-2 +3}}}


{{{f(3)=1}}}