Answer:
Cedric has to pay $6.00 for 5 songs.
Explanation:
It is given that Cedric can buy 3 songs for $3.60 or 4 songs for $4.80.
Price of one song is calculated as

And

Therefore we can say that the price of a song is $1.20.
Price of 5 songs is

Therefore Cedric has to pay $6.00 for 5 songs.