A common billing system that bills each patient only once a month but spreads the work of billing over the month, sending invoices to groups of patients every few days, is called _______________ _______________. 

Which of the following describes a system that uses a number of agencies, responder levels, and delivery vehicles?

A) A multiple agency system B) A tiered system C) An alarm system D) A multijurisdictional response system

The two types of accounting are ____________________ and ____________________.

Fill in the blank(s) with the appropriate word(s).