A music download service charges a flat fee each month and $0.99 per download. The total cost for downloading 27 songs this month is $42.72. how much is the flat fee

$15.99

Step-by-step explanation:

First, write your equation as 0.99x + y = 42.72. Y represents the flat fee and what we want to figure out. If you're downloading 27 songs, plug 27 into x; it should look like this: 0.99(27) + y = 42.72. Multiply 0.99 by 27 to get 26.73. This is what your equation should look like now: 26.73 + y = 42.72. Subtract 26.73 from 42.72 to get your flat fee, $15.99. Hope this helps!

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm