Question 6 • Grade 7 Mathematics
The temperature starts at 18°F and rises 1.2°F each hour. It becomes warmer than 32°F when 18 + 1.2t > 32, which gives t > 11⅔ hours after midnight, or after 11:40 a.m. Since recess starts only on the hour or half hour, the first eligible recess time is 12:00 p.m. Thus, only students with recess at 12:00 p.m. or later may go outside.
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