For which set of numbers is 4 the greatest common factor?

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

Which number completes the inequality? 2/3 < _ < 7/9

    choose the correct definition for  extremo.  a.  end      b.  extra      c.  extract      d.  eventual