1)
Why does it say "va'Yashev Lo Minchah"?
1.
Malbim: Initially Hoshe'a was a slave to Tiglas Pil'eser. When he died, Hoshe'a ruled by himself. Shalman'eser came upon him, and Hoshe'a was his slave, and he 'returned' the tax that he did not pay during his years of rebellion.
