As this is a trinomial function I believe the answer is true due to the fact that a trinomial curve consists of three parabolic curves in which each has its own respective minimum or maximum value i.e. critical number.
Answer:
1A: 12
Step-by-step explanation:
2A: 16
3A: 21.333
4A: 13
5A: 14
1B: 15
2B: 12
3B:29
4B: 11
5B: 24