Thoughts? this is for chem grade 11

Pb(s)>Pb2+(aq)

Explanation:

If you look at the oxidation numbers Pb increases from 0 to +2 while Cu decreases from +2 to 0.Hence,Pb is the reducing agent and Cu2+ is the oxidizing agent.

Also, a thing to note is that the oxidation number of  any solid is always 0.

~Hope this helps:)

the answer is:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).