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Adam plans to choose a video game from a section of the store where everything is 75%
off. He writes the expression d−0.75d
to find the sale price of the game if the original price is d
dollars.

Rena correctly writes another expression, 0.25d
, that will also find the sale price of the game if the original price is d
dollars.

Use the drop-down menus to explain what each part of Adam's and Rena's expressions mean.

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MangoSorbet
Both Adam and Rena is correct.

If something is 75% off, then they are taking away 75% of the original amount. Thus, d - 0.75d would be correct, where d is the original price. 

Rena is also correct, because if you take away 75%, then all that's left is 25%. So, 0.25d will also work.

Hope this helps! Have an awesome day :)

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