A glass marble has a mass of 7.9 grams. If one cc (cc stands for cubic centimeter or cm) of this glass has a mass of 2.5 g, what is the volume, in cc of this glass marble?

So the question tells us that on cc of this glass equals 2.5g. So you would take the 7.9g and divide by 2.5g. Which will give the answer 3.16cc. If you need to use significant figures, the answer would be 3.2 cc. I hope this helps!

It would be (at) + cu (s)

Ithink the answer is a or d.