Answer:
Jake and Liu
Step-by-step explanation:
We are given that an algebra class teacher asked for example of non prime numbers.
Jake says=51
51 have factors 1,3,17 and 51.
Teresa says=41
41 have factors 1 and 41.
Liu says=21
21 have factors 1,3,7 and 21.
We know that prime number are those numbers which have only two factors 1 and itself.
Composite number:It is that number which have more than two factors 1 and itself.
Therefore, by definition of prime number Teresa is incorrect in their response and Jake and Liu are both correct .