subtract like terms
5a^3 - 6a^3 = -a^3
7 - 4 = 3
answer is -a^3 + 2a^2 - 4a + 3
The answer is -1.5+(-2.75)=-4.25. This equation is the same as the result of -1.5 -2.75.
I would go with A. An estimate.
This may not be the right answer but Good Luck!
The fraction is written as 3/4.
If you divide 3 by 4 you will get the decimal.