Answer:
The number of persons entering the bank based on given 20 simulations are 12
The number of persons exiting the bank based on given 20 simulations are 8
We have to find the probability that she will see a person entering the bank.
The probability that she will see a person entering the bank is:


Therefore, the option 0.600 is correct.
The answer to your question is -16/3
I'm not completely sure which way they would like for you to do it
but anyways
3 to 15 is a times 5
so 5 times 5 is 25
so a possible width can be 25
as in 15 by 25
or
5 to 15 is times 3
so 3 times 3 is 9
so a possible width can be 9
as in 15 by 9
I personally think 25 inches wide would be the better answer
-5 = 6g - 7a multiply by -1
-5 = -6g+7a