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Mathematics 12 Online
OpenStudy (anonymous):

The weather for March in Toronto, Canada, can be extremely unpredictable. On one Tuesday, the temperature at 6:00 a.m. was -10 degrees Celsius (°C). By 2:00 p.m., the temperature had increased by 15°C. At 5:00 p.m., as the Sun started to set, the temperature dropped by 7°C. Which of the following shows the correct change in temperature?

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