Answer: They should order 14 pizzas.
Explanation:
Given table :
Team Number of People
Sharks 17
Wolves 21
Tigers 20
Hawks 17
Coaches 9
Total = 84
They order one pizza for every 6 people.
Total pizzas required = (Total people) ÷ 6
= 84÷ 6
= 14
Hence, They should order 14 pizzas.