The temperature has been going down at a constant rate. In 3 hours it went down 15 degrees. Which expression best shows the temperature change each hour? A.−15⋅−3 B. 15⋅3 C. −15÷3 D.15÷3

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The answer would be letter D. Hope this helps.... 
Hey there!

I think it’s either A or D

Hope this helps!