1. frank delivered packages and mail to the school every day.
what is the simple predict and what is the simple subject

Simple predicate - "delivered packages and mail"

Simple subject - "Frank", "School".

Explanation:

The sentence “Frank delivered packages and mail to the school every day”. This sentence contains both simple predicate and simple subject. The simple predicate here is ‘delivered packages and mail’. Simple subject here is ‘frank’ and ‘school’. This is because Frank and school is an example of simple noun and it forms the simple subject. The simple predicate here is delivered packages and mail because it does not gives the complete information of the entire scenario.

the statement that best explains why the tenth amendment reserves some rights and powers to states is that the framers believed in the principle of federalism. this principle says that some powers are in the hands of a centralized national government, while others are reserved for the governments of several states.

and your question what topic are you in trouble with?