Well I solved it and This is what i got
Answer:
2n^2 - 11
steep by steep explanation
=(4n^2 + 3n -5) -(2n^2 + 3n +6)
= 4n^2 +3n -5 - 2n^2 - 3n -6
= 2n^ - 11
The average is 30 because 36+26+30+28=120 divided by 4 = 30
-420 is your answer
your welcome make me the brainliest!!!
