Answer:
i think 9 but 6 could also be right
Step-by-step explanation:
18-12=6------18-3=15-------15-3=12-----------12-3=9
Answer:
11,400
Step-by-step explanation:

If I had written your question in English, I could have helped you
Add up the legnths of the cable then multiply by 1.5
35+50=85
85 times 1.5=127.5
the answer is $127.50