Answer:
You need to add more context to the question. I cannot answer it without knowing what "These scales" are.
3402
Step-by-step explanation:
answer are
a.k=13.5;13.5y=x
b.k=1.5;y=1.5x
c.k=1.5;y=1.5/x
d.k=13.5;xy=13.5
100000
