In this case you can say in one hour Austin earns $7.50.
Answer:
hour
Step-by-step explanation:
Given: The total time Collin spent on 6 songs =
Now, the fraction of an hour does he spend practicing each song is given by :-

The fraction of an hour does he spend practicing each song=
Answer: The third one is the correct answer
Step-by-step explanation: I hope this helps