Angela made $90000 income in 2004 then in 2005 she made income of $120000.
The percentage increase on her income will be determined by subtracting tge the initial profit from the final profit then dividing by the initial and multiplying by 100.
Well 300 and 30 ones would be {330} and 30 hundreds and 30 tens would be 3,300 because 30 times 100 equals 3,000 and 30 times 10 equals 300. Hope this helps :}