Well.. There's 3y-2=y+4 right?
Add 2 and you get 3y=y+6
Minus y- you get 2y=6
Divide it at 2 and you get y=3.
Sorry for the explanation but I'm from another country and this is the best I can
No it does not
Hope this helps
Answer:
8000 times 0.09 times 4.5
3240 is the amount of interest that will be gained