Is 3/6 14/28 16/32 17/34 a proportional relationship

Which inequality comparing two of the expressions is true when 0.7 < x < 0.9

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Mr. roseanne will buy 12 1/2 pounds beef for for a cookout. the price for the first 3 pounds of beef is $4.99 per pound. after that, the price is $4.49 per pound. how much will mr. roshan pay for the beef