At 2: 15 pm, the temperature of a substance in a science experiment was 7∘f. the
At 2: 15 pm, the temperature of a substance in a science experiment was 7∘f. the temperature was then recorded at 15-minute intervals. at each interval, the new temperature was 3∘f less than the previous temperaturewhat was the temperature of the substance at 3: 30 pm?