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.

y = 50 - 15x

y = 15x + 50

y = 50x + 15

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.
 
		
y = 50 - 15x
 		
y = 15x + 50
 		
y = 50x + 15
 		
y = -15x

anonymous · Answer

y = 50 - 15x

This equation is saying that the money they have left (y) is equal to their original money (50) minus what they spend (15 per CD).