Answer:
C
Step-by-step explanation:
If you need help with how I got my answer, you can ask me.
12.
13.
14.
15.
16.
yeah that's the correct answer
-20 is -10 × 2
-1 is -0.5 + -0.5
40:70 becomes 20:35 which becomes 4: 7.
The answer is 4:7