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Drake's sister Stephanie is 2 years younger than him. If the sum of Drake's age and 2 times Stephanie's age is 98, how old is Stephanie?
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Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)
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The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?
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8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?
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Drake's sister Stephanie is 2 years younger than him. If the sum of Drake's age and 2 times Stephani...
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