I believe that he is not correct. By him saying a number hes saying 10-5=5 but you could also do 10-0=10 so he is not correct.
Answer:

Step-by-step explanation:
Just multiply the two sides
1. 
Use FOIL (First, Outer, Inner, Last)
2. 
^ After simplifying
Answer:
is A
r<11
Step-by-step explanation:
I HOPE THIS HELPS
Answer:
The expected value for the person buying the insurance is of -$48.
Step-by-step explanation:
Expected value:
0.169% = 0.00169 probability of earning the death benefit of $100,000, subtracting 217, 100000 - 217 = $99,783.
100 - 0.169 = 99.831% = 0.99831 probability of losing $217.
What is the expected value for the person buying the insurance?

The expected value for the person buying the insurance is of -$48.
Answer:
Hey there!
11 is greater than 14.
Positive numbers are greater than negative numbers.
Hope this helps :)