Lisa will have spent a total of $89.00 after 4 months on the online music service, including the initial fee and the cost of the songs.
Explanation:
AI-generated answer
To calculate the total amount Lisa will spend after 4 months, we need to determine the total cost of the songs she purchases each month and add that to the initial fee she paid to join the online music service.
The cost of each song is $0.75, and Lisa purchases 18 songs each month. Therefore, the total cost of songs per month can be calculated by multiplying the cost per song by the number of songs purchased:
Cost per month = Cost per song * Number of songs purchased per month
= $0.75 * 18
= $13.50
Since Lisa will be purchasing songs for 4 months, we can calculate the total amount she will spend on songs over the 4-month period by multiplying the monthly cost by the number of months:
Total amount spent on songs = Cost per month * Number of months
= $13.50 * 4
= $54.00
In addition to the cost of the songs, Lisa paid an initial fee of $35.00 to join the online music service. Therefore, the total amount she will spend after 4 months can be found by adding the initial fee to the total amount spent on songs:
Total amount spent after 4 months = Initial fee + Total amount spent on songs
= $35.00 + $54.00
= $89.00
Therefore, Lisa will have spent a total of $89.00 after 4 months on the online music service, including the initial fee and the cost of the songs.