Answer:
f(x)=-2x+9
f(4)+3=?
let x equal to 4
f(4)=-2(4)+8
f(4)=-8+9=+1
f(4)=1
then add 3 to f(4)
f(4)+3=1+3
f(4)+3=4
and he need f(4)+3 so the answer is
4
that's it
Well discretionary income includes money spent on luxury items vacations and non essential goods and services the other i believe stands for nuveen municipal income which is stock right we need more info hope this helps a lil