Solving for part A

Domain of composition: x ≠ 0 i.e. Domain is the set of "Real numbers excluding number 0".
Solving for part B

The larger van has maximum 31 seats, the small van have 17 seats
Answer:
The answer is X > 1 hope that helps!
Step-by-step explanation:
You would do 300/5 since there are 300 catfish
Then multiply the resulting number (60) by 2
The answer is 120