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In Antartica the temperature can change drastically between day and night. At 3:00 pm, the tempature was a chilly 7 degrees Celsius. At that time, it began to drop at steady rate of 6 degrees Celsius every hour . What was the temperature at 7:00 pm?

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Answer:

[tex]T = -17\,^{\textdegree}C[/tex]

Step-by-step explanation:

The temperature at 7:00 pm is:

[tex]T = 7\,^{\textdegree}C + \left(-6\,\frac{^{\textdegree}C}{h} \right)\cdot (4\,h)[/tex]

[tex]T = -17\,^{\textdegree}C[/tex]

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