Answer: The new penny is not pure copper
Step-by-step explanation:
Density
is defined as a relation between the mass
and the volume
:

Now, we are told the density of pure copper is:

And we are given the mass and volume of the new penny, with which we can calculate its density:

As we can see the density of this penny is not equal to the density of pure copper, hence the new penny is not pure copper.