What is the equations of y = x^3with the given transformation? vertical stretch by a factor of 8, horizontal shift 2 units to the right, vertical shift 7 units down

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.