Simplify the expression
4a + 2b - 2a + 9
*
A 8b + 9
B 6a + 11b
C 2a + 11b
D 2a + 2b + 9
The expression can be simplified by combining like terms. We can add 4a and -2a which gives 2a, and 2b and 0b which gives 2b. This gives us the simplified expression:
2a + 2b + 9
Therefore, the correct answer is D) 2a + 2b + 9.