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please help and please explain why you picked that answer

Jason purchased a pack of game cards that was on sale for 13% off. The sales tax in his county is 8%. Let y represent the original price of the cards. Write an expression that can be used to determine the final cost of the cards.

y − 0.13y

1.08(0.87y)

0.08(0.87y)

y − 0.87y + 0.08y

Respuesta :

if original price is y then with the sales tax it will by  1.08y
now we have to take 13% (0.13)  off that 
one way would be to multuply 1.08y by 0.87

the second option is the correct one

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