Answer:
for apex the answer is -6
Step-by-step explanation:
Answer:
y=4
Step-by-step explanation:

check your calculator for the [!] factorial button.
also bear in mind that most calculators also have an [ₙPᵣ] button, to get Permuations, and you can just use that.
There are 6 children that ate 9 cookies what is the ratio of the children and cookies?
Hope this helps!