Positive 3, If You're starting at -6 and you add the first 6 it's at 0, now you have 3 more to add to make 9. And that gives you positive 3. or if you do 9 - 6 you can get your answer that way too.
It is always too 100.0 so one decimal place
Can be written as 24% or 24/100
$160 (if uncle, granny, aunt, gave $100 in total) $260 if they gave $100 each