Answer:
7a
Step-by-step explanation:
You would just add the two numbers and put the a in front of the answer. It would be 2 + 5 (which is 7) then put the a after the 7.
3% then 2/50 then 0.08 because 2/50 turns to 4% and 0.08 goes to 8%
1st, 2nd, 4th. hope this helps