Try it like this. it may help: Make it like a rainbow. Find out what all can go into 8 and 14. So kinda like this.
1,2 4 ,8
then just connect it, like a rainbow, hence the name.
Hope that helped!
Answer:
$1080
Step-by-step explanation:

convert % to decimal by multiplying 3.2%x100=0.032
then multiply by initial amount 3000x0.032
then multiply by 2 because it's compounding semiannual
then multiply by 3 because it's over a 3 yr period
do the same for the quarterly compound but multiply by 4 because it's quarterly

over a 3 yr period the quarterly compounded amount will earn:

$504 more than the account compounded semiannual
You subtract 7% from 32=29.76
Then you subtract 8% from 29.76=27.379