Acandle is 6 in tall after burning for 1 hour. after 3 hours it is 5 1/2 in tall. write a linear equation to model the height y of the candle after burning x hours. when does the candle burn out?

Samantha swam upstream for some distance in one hour. she then swam downstream the same river for the same distance in only 12 minutes. if the river flows at 4 mph, how fast can samantha swim in still water?

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Do 12/14 and 8/10 have the same value? explain your answer.