Catherine paid $159.00 for an mp3 player. if the price paid includes a 6% sales tax, which of the following equations can be used to
determine the price of the mp3 player before tax?
(let x represent the cost of the mp3 player and y represent the total cost after tax.)
o a. y=1.6x
b. y=x + 6x
c. y = 0.94%
d. y = 1.06%

ANSWER:

The equation is y = 1.06x, so option D is correct.

EXPLANATION:

Given:

Amount Catherine is paid  for an MP3 player=$159.00  

The price paid includes a sales tax= 6%

To find:

Equations  that can be used to determine the price of the MP3 player before tax?

Solution:

Now, we know that, total cost = selling price of item + sales tax on item

y = x + 6% of x  

y = x +  

y = x + 0.06x  

y = 1.06x  

Hence, the equation is y = 1.06x, so option D is correct.

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