The answer to which situation is best estimated by-7?
A The temperature falls 1.9°F from 4.3°F.
B A hot-air balloon rises 4.1 meters from the ground
and then rises 2.3 meters more.
C A submarine goes 3.8 feet below the surface of the
ocean and then goes 2.5 feet farther down.
D The amount of money Sarah has after she buys milk
for $3.85 and bread for $2.45.