6pens and 4 pencils cost $1.08. 4 pens and 3 pencils cost 75 cents. find the cost of 5 pens and 5 pencils
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Afitness center has 2 membership plans one has a low dollar sign up fee of 15 dollars and costs 38 dollars per month to join. a second plan has a higher sign up fee of 78 dollars but a lower monthly fee of 31 dollars for what number of days of the month is the coat the same