Karen arrived home and turned on the heater.
Before turning on the heater, the temperature in the room was −5°C.
After fifteen minutes, the temperature in the room was 12°C.
What was the change in temperature in the room? Write your answer as a directed number. (2 marks)
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Show Worked Solution
`text(Change in temperature) = 5 + 12 = 17\text(°C increase)`
`:.\ text(Change in temperature) = + 17\text(°C)`