Answer:
[tex]x = 50-7s[/tex]
Step-by-step explanation:
Remember, we are not told the cost of each song; meaning it will be represented by 's'.
x represents the amount left on the card
7 the number of songs Laqueta wants to buy
Assuming the cost of each song is $0.9 then the formula could be applied this way
[tex]x = 50-7 (0.9)[/tex]
[tex]x = 50-6.3[/tex]
[tex]x = 43.7[/tex] or $43.7
