Total cost to download 30 songs = $ 40.7
Step-by-step explanation:
Given : A music app charges $2 to download the app plus $1.29 per song downloaded.
Then the total cost = Charge to download app + price per song x (No. of songs) (1)
Let x be the number of songs and y be the total cost ( in dollars).
Then, we have the following equation ,
i.e. Required linear equation =
At x= 30 , we have
Hence, the total cost to download 30 songs = $ 40.7