Hi there,
I hope you and your family are staying safe and healthy during this anomalous time.
To find the answer, we just need to:

Thus,
We can estimate they will need 27 or 26 trays
Please leave 5 stars and a like if you find this answer helpful! Don't hesitate to reach out to me if you need more help.
~Garebear
Answer:iStep-by-step explanation:
i^42
Answer:

Step-by-step explanation:
Assuming
and
are vectors, their dot product is
where
:

Therefore, 
The answer to the question is 0.5
oh, sorry my answer is wrong :) you can follow the other comment.