Question 729763
One music company charges a $15 membership fee and $0.75 each to download a song. Another company charges $.90 per song to download a song (no membership fee).
.
Let x = number of songs downloaded
then
1st company:
.75x + 15
2nd company:
.90x 
.
For what number of songs will both companies charge the same amount?
set the two equations equal to each other and solve for x:
.75x + 15 = .90x
15 = .15x 
15/.15 = x 
100 songs = x
.
How much will it cost when each company charges the same amount? 
plug above into:
.90x
.90(100)
$90