Temperature bellow zero

At 3 PM, the temperature was 12 F. It then began dropping 2 F every hour for 7 hours. What was the temperature after 7 hours?

Correct answer:

t2 =  -2 °F

Step-by-step explanation:

t1=12 °F t=7 h r=2 °F/h  t2=t1+r t=12+(2) 7=2°F



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