Adding and subtract Polynomials Please help me Fast

1. (9m + 6) + (–5m – 6)  (1 point) 

A.4m + 12 

B.14m + 12 

C.14m – 12

 D.4m 

2. (3r2 + 7r + 1) + (4r2 – 8r – 2)  (1 point)

A.7r2 + 15r – 1

 B.7r2 – r – 1 

C.7r2 – 15r – 3 –

D.r2 – r – 1 

3. (6h + 1) – (9h + 4)  (1 point)

 A. –3h – 3 

B.15h – 5 

C.–3h + 3 

D.–3h + 5 

4. (m2 – m – 4) + (m – 5)  (1 point) 

A. m2 – 2m + 9 

B.m2 + 2m – 9 

C.m2 – 2m – 9 

D.m2 – 9 

5. (4x + 4) + (3x + 2 + 1)  (1 point)  

A.7x + 3 

B.x + 7 

C.7x + 7 

D.8x + 6