Which of the following is the independent quantity in the function below?

amount of remaining mp3 player memory(number of downloaded songs)

a. mp3 player
b. amount of remaining mp3 player memory
c. number of downloaded songs
d. total memory of mp3 player

Among the following, the independent quantity in the function:
amount of remaining MP3 player memory as a function of downloaded songs is

C. NUMBER OF DOWNLOADED SONGS

The remaining memory will depend on the number of songs downloaded. So, the number of downloaded songs is considered as the independent variable while the remaining memory is the dependent variable.

In all honesty, there really is no “work” per say to show. mainly it’s just using the process of elimination. the question is asking which domain(s) would be the most appropriate for the function c(n). n is the number of observed vehicles so right away, 1, 2, and 3 can be eliminated.why? 1, 2 start in the negatives and therefore it is impossible to observe negative cars. so, #4 would be the best answer to the given problem.