Question

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Answer 1

6•(-5)

Explanation:

Each hour there is a change of -5, so after:

• 1 hour: -5=1•(-5)
• 2 hours: -5+(-5)=2•(-5)
• 3 hours:-5+(-5)+(-5)=3•(-5)
• 4 hours: -5+(-5)+(-5)+(-5)=4•(-5)
• 5 hours: -5+(-5)+(-5)+(-5)+(-5)=5•(-5)
• 6 hours: -5+(-5)+(-5)+(-5)+(-5)+(-5)=6•(-5)