Answer:
The type of method is convenience; he isn't posting advertisements to volunteer(self-selected) and he isn't following an algorithm(systematic), therefore, he's using convenience.
8208 total tickets / 12 concerts =
684 tickets per concert.
Answer:
ITs blury
Step-by-step explanation:
At the 2/8 part, just use the quadratic formula. If you use it, you should get the other two zeroes:

Answer:
Apartment 1 is his best option