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Mathematics 10 Online
giannawatson:

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. y − 0.15y 0.05(0.85y) y − 0.85y + 0.05y 1.05(0.85y)

leila1234567:

k do you know what sales prince is

giannawatson:

no that is why i am confused it is very odd

Aqual:

i know it

Aqual:

ok, so y is the price of the dvd. 0.15 is how much of y is gone. 0.85 is what the dvd is now worth. 0.05 is applied tax.

Aqual:

so you want to find how much the dvd costs after removing 15%. then to tax that, multiply the dvd cost by 5%

giannawatson:

so that would be c or is that wrong?

Aqual:

no c is wrong because it is taking 85% from y

Aqual:

you want to multiply y by 0.85

giannawatson:

a cuz he is taking 0.15 away.

Aqual:

no

Aqual:

there is no tax being applied there

giannawatson:

B? it has what you get 0.05 is the tax and 0.85 is what it is worth

Aqual:

yes

Aqual:

Great job

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