Jessica purchased a dvd that was on sale for 12% off. the sales tax in her county is 3%. let y represent the original price of the dvd. write an expression that can be used to determine the final cost of the dvd. how do i solve a problem like this ? khan academy

0.88%y + 0.03%

Step-by-step explanation:

if it's 12% off: then she's actually paying 88% with a tax of 3%

An expression that can be used is (-0.12+0.03)y=x.

Step-by-step explanation:

You take away 12 percent(-0.12) and add 3 percent(0.03) so you would just end up with -0.09 * y.

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the answer is vanilla

step-by-step explanation: