Answer:
9
Step-by-step explanation:
Selection B is appropriate.
_____
The signs of the coefficients tell you the binomial factors must have both signs positive (selections B and C only). Selection B produces an x-term that is 15x+15x=30x (as we want); selection C produces an x-term that is 45x+5x=50x (not what we want).
48.
N/6 = 8
48/6 = 8
8 = 8
8 does indeed equal 8
Good luck!
Multiply 6 and 8 which is 48cm