Answer:
a.) 
Step-by-step explanation:

Find two numbers that add up to -6 and multiply to -40 (you will most likely need a negative and a positive because -40):
-10 and 4
Factor:

Finito.
a) (2/5) x 35 = 14 students received invitations
b) 35-14 = 21 students didn’t receive invitations
Answer:
the answer is easy.
Step-by-step explanation:
Answer:
16
Step-by-step explanation:
16