shaylin18 shaylin18 01-12-2020 Mathematics contestada Lucy is knitting a blanket and needs to buy some more yarn. At her local craft store, 2 skeins of yarn cost 57 and 8 skeins of yarn cost $28. What is the constant of proportionality in this direct variation? a. 7/2 b. 2/7 c. 7 d. 2