Hi can you please tell me the answe to this question its due in a few mins. Thank you so much!!

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.

Answer this question i need as soon as possible