Math problem

Question

You have an iTunes gift card to use for purchasing music. Each song costs $2 (meaning, the value of your gift card goes down $2 per song purchased). You have already purchased 6 songs and still have $38 remaining on your gift card, write an equation that represents the total amount y (in dollars) left on your gift card after x number of songs.

Answer 1

6 songs have been purchased, that is $12.

The starting amount on the card is $50, $38 + $12

y = $50 - 2x