Cody paid $24 to join an online music service if she purchases 15 songs each mont at a cost of $1.25 per song what will be the total amount she has spent 6 months

Cody will spend $1.25 x 15 songs = $18.75 per month on songs.

In 6 months, she will spend a total of $18.75 x 6 months = $112.50 on songs.
Including the $24 she initially paid to join the service, the total amount Cody will have spent in 6 months is $112.50 + $24 = $136.50.