Question

A cold front hit Hartford, Connecticut. The temperature dropped by 7° F each hour from 5:00 a.m. to 9:00 a.m. What was the beginning temperature at 5:00 a.m. if the temperature at 9:00 a.m. was -10° F?

Answer 1

$9 - 5 = 4 \\ 4 \times 7 = 28 \\ - 10 + 28 = 14$
therefore it was 14°F at 5am