choose the letter ᴏғ ᴛʜᴇ ᴄᴏʀʀᴇᴄᴛ ᴀɴsᴡᴇʀ...

Answer:
1.D-130°
2.B-115°
3.C-13
explanation:
3.8x-6=6x+20
=8x-6x=20+6
=2x=26÷ 2
=13