Answer:
Since she arrived at 8:30 its not accurate because her records started at the time she arrived so she didnt get the times of the students that arrived before her
Step-by-step explanation:
Hope this helps:))
Answer:
1+7+8+8
Step-by-step explanation:
The answer is

In the choices; the coefficients 21, 32 and 10 are not perfect squares.
This is how it would look like, hope that this is not too late to help you yet!
Have a great day!