Answer:

Step-by-step explanation:

The right amount to test would be 30.
200 is to many kids and 12 is not enough.
Hope this Helps!!
What are you asking exactly
Answer:
D. –5.2 + (–6.4) = –11.6
Step-by-step explanation:
First, you can eliminate A and C because 5.2 is positive. Since the red arrow is pointing left, it indicates that the number (-5.2) is negative.
Then, you look at the second arrow, the green one. It is pointing left, so it would be -6.4.
I hope this helps :)
Answer:
y= - 12
Step-by-step explanation: