+0  
 
0
450
1
avatar+51 

Jamie purchased a DVD that was on sale for 15% off. The sales tax in her county is 5%. Let y represent the original price of the DVD. Write an expression that can be used to determine the final cost of the DVD.

 Jun 4, 2017
 #1
avatar
0

Since the DVD has 15% off its original price, then that means:

100% - 15% =85% which is the sale price you pay,

Since the original price was "y", then:

85%y + 5% sales tax =The final sale price, or

0.85y + 0.05(0.85y) =The final sale price.

 Jun 4, 2017
edited by Guest  Jun 4, 2017

6 Online Users