The temperature in the ice rink must stay below 50°F this morning the temperature was 71 Degrees Fahrenheit the icing runs a coo
ling device that can decrease the temperature by 3.5° every hour how many hours will it take for the temperature to fall below 50°
1 answer:
Answer:
The temperature needs to decrease 71° - 50° = 21° that at least not greater than 50°F
As we know, the device decrease the temperature down 3.5° every hour, so
21 : 3.5 = 6 hour
Call x is the hours we need to wait to let the device decrease, we have
x > 6
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