In air, the speed of sound S, in meters per second, is a linear function of the air temperature T, in
degrees Celsius, and is given by S(T) = 0.6T + 331.4.
Which of the following statements is the best
interpretation of the number 331.4 in this context?
A) The speed of sound, in meters per second, at
0°C
B) The speed of sound, in meters per second,
at 0.6°C
C) The increase in the speed of sound, in meters per
second, that corresponds to an increase of 1°C
D) The increase in the speed of sound, in meters per
second, that corresponds to an increase of 0.6°C