How is 3^x translated if I change it to 3^(x+4)

If you change 3^x to 3^(x+4) you get 

Evaluate for x=3(33)(3+4)(33)(3+4)=189

Evaluate for x=4(34)(4+4)(34)(4+4)=648

Evaluate for x=x(3x)(x+4)(3x)(x+4)

Evaluate for x=3x(33x)(3x+4)(33x)(3x+4)

Evaluate for x=x+4(3x+4)(x+4+4)(3x+4)(x+4+4)

i did everything and idk wat u mean still .-. srry