A display has 6 packs of marbles with a total mass of 629g. The packaging of each pack has a mass of 2/3g and each marble has a mass of 4 1/2g.
Which equation can we use to determine m, the number of marbles per pack?
A.6x4 1/2m+2/3=629
B.6m(4 1/2+ 2/3)=629
C.6m+4 1/2 +2/3)=629
D.6(4 1/2m +2/3)=629