Answer:
Option C, -0.2C
Step-by-step explanation:
Step 1: Subtract the first 6 hours
4 + 6(-0.8)
4 - 4.8
-0.8
Step 2: Add the next 2 hours
-0.8 + 2(0.3)
-0.8 + 0.6
-0.2
Answer: Option C, -0.2C
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