That would be 8, its in the center so forget 9 or 7.
The first equation shows C and D, and the second shows C and B. The overlap will be at C, so thats the answer.
Answer:
-a+11
Step-by-step explanation:
hard to explain. but should be correct
120+.5x=50+.7x
Subtract 50 from both sides and then subtract .5x from both sides to get 70=.2x. Then divide both sides by .2 to get x=350.
Answer:

Step-by-step explanation:

