Answer:
$15.99
Explanation:
A music download service charges a flat fee each month and $0.99 per download.
Charge of downloaded 27 songs in this month = 0.99 × 27
= $26.73
The total cost for downloading 27 songs this month = $42.72
Therefore, the flat fee = 42.72 - 26.73 = $15.99
Flat fee for the month is $15.99.