Call multiple functions from trigger?

I run PostgreSQL-9.2.4

Is it possible to call 2 functions from a trigger?

Let's say I have two functions for two different tables to be executed if the following trigger fires:

Trigger:

CREATE TRIGGER start ON system_status FOR EACH ROW
WHEN ((new.event = start_task))
EXECUTE PROCEDURE ...()

Function 1: (When task starts, remove any previously assigned next task for this system)

CREATE FUNCTION void_next_task() RETURNS trigger AS $$

BEGIN
  DELETE FROM tasks_status ts
  WHERE ts.system = NEW.system
  AND ts.event = 'next_task';
  RETURN NEW;
  END;

$$

LANGUAGE plpgsql

Function 2: (If the inserted combination of task and system is already present in the table, then mark any earlier record with this combination as deleted)

CREATE FUNCTION void_dup_task() RETURNS trigger AS $$

BEGIN
  UPDATE system_status ss
  SET deleted = 'TRUE'
  WHERE ss.system = NEW.system
  AND ss.task = NEW.task
  AND ss.deleted IS FALSE;
  RETURN NEW;
  END;

$$

LANGUAGE plpgsql

So I ended up with the following ways to resolve it:

1. To have a trigger which calls two functions;
2. To have a function which performs update on one table and delete on another one;
3. To have two exactly same triggers and two different functions;

Before I will go ahead and implement solution 3 could you advice me if solution 1 or 2 are possible at all?