Based on the temperature at the beginning of the day, and the change in temperature by the end of the day, the temperature at day's end was -3°C.
The temperature started at 4°C and then dropped during the day by a temperature of 7°C.
The temperature at day's end will therefore be:
= Beginning temperature - Change in temperature
Solving gives:
= 4 - 7
= -3 °C
In conclusion, the change in temperature would lead to an ending temperature of -3°C.
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