When Tyrone fell asleep one night, the temperature
was 24°F. When Tyrone awoke the next morning, the
temperature was -12°F. Letting + denote a rise in
temperature and - denote a drop in temperature, what
was the change in temperature from the time Tyrone
fell asleep until the time he awoke?
F. -36°F
G. -12°F
H. +6°F
J. +12°F
K. +36°F