Please help with my organic chemistry homework

Have a hard time deciphering whether or not to use E,Z or R,S in

Question

Please help with my organic chemistry homework. Have a hard time deciphering whether or not to use E,Z or R,S in

naming molecular structures as well. If you could tell me the difference in the two, that would be incredible!

Scanned by CamScanner Scanned by CamScanner Scanned by CamScanner Scanned by CamScanner Scanned by CamScanner
Science