4 - (x + 6)
or -x -2
.......
Answer:

Refer to the attachment for explication of steps. :)
Answer:
1.5 hamburgers per minute
Step-by-step explanation:
In 10 minutes, Justin can eat 15 burgers.
In 1 minute, Justin can eat 15/10 burgers.
15/10 = 1.5
A and D I think or it may just be A