You should try C I’m not sure but try I guess!
Answer:
Option A - 
Step-by-step explanation:
We have given the expression 
We have to find the value of the expression ?
Solution :
Step 1 - Write the expression

Step 2 - Applying symbol rule i.e. multiplication of positive into negative is always negative, 

Step 3 - Solve

Therefore, The value of the expression is 
So, Option A is correct.
Answer: A property occurring in the example 11.5 + (-11.5) = 0, is additive inverse.
Step-by-step explanation:
A property where sum of any number and its inverse is equal to zero is called additive inverse property.
For example, 11.5 + (-11.5) = 0
Here, 11.5 is the number and its inverse is (-11.5). The sum of both these is equal to zero. Hence, it shows a property of additive inverse.
Thus, we can conclude that property occurring in the example 11.5 + (-11.5) = 0, is additive inverse.
All we have to do is divide how many blueberries he ate in an hour (80) by how many times 15 minutes is in 1 hour (4)
80 ÷ 4 = 20
We can check our work by multiplying 20 by 4
20 x 4 = 80
Therefore, David ate 20 blueberries in 15 minutes
Hope this helps you!
Always remember you are a Work Of Art!
- Nicole :) <3