5. Which of the following is equivalent to the equation 4x + 7y=z? (2-7y)
A. X = 4z - 28y
B. x=
4
(z + 4.0)
C. y = 7z + 28x
D. y=

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.