Answer:
negative, positive, zero, and undefined
Step-by-step explanation:
Step-by-step explanation:

Answer: B. 12
Step-by-step explanation: Cause we have to subtract because let see 48+12=60 so we have to subtract each numbers with 12.
Answer:
510 pounds
Step-by-step explanation:
6x85=510
Positive add a positive plus positive equals positive neg plus neg equals neg