# A cold front

At 1:00 PM, the temperature was at 46 degrees. Then, a cold front moved in and decreased the temperature 12 degrees per hour. The temperature at 6:00 PM = _____ degrees.

Correct result:

t =  -14 °F

#### Solution:

$T=6 - 1=5 \ \text{h} \ \\ \ \\ t=46 - 12 \cdot \ T=46 - 12 \cdot \ 5=-14 ^\circ \text{F}$

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