Julio takes his brother to a music store to buy CDs. Together they have $50 to spend on CDs. The music store sells CDs for $15 each. Write an equation for the amount of money, y, Julio and his brother will have left over after purchasing x amount of CDs.

A. y = 50 – 15x
B. y = 15x + 50
C. y = 50x + 15
D. y = -15x

Question

Julio takes his brother to a music store to buy CDs. Together they have $50 to spend on CDs. The music store sells CDs for $15 each. Write an equation for the amount of money, y, Julio and his brother will have left over after purchasing x amount of CDs. 

A.   y = 50 – 15x  
B.   y = 15x + 50  
C.   y = 50x + 15  
D.   y = -15x

anonymous · Answer

just multiply the CD price by the amount purchased to know how much is spent. From there you should know what to do.

anonymous · Answer

$50 is your initial amount, meaning that it must be some equation that involves $50 minus some value. That value is determined on how many CDs they buy, which cost $15 a piece. Meaning the cost of the CDs are $15 times x amount of CDs. Meaning your expression is $50 - $15(x)
:)