Can you look at this and answer 1-8 and give the answers and the answer to the riddle please.

For which of the following counts would a binomial probability model not be reasonable? a)the number of people in a classroom born in januaryb) the number of people in a classroom with red hair c) the number of people admitted to a hospital in a day with a particular disease d) the number of heart beats in a one-minute perio.

Alicia puts $400 in a bank account. each year the account earns 5% simple interest. how much money will be in her bank account in six months?

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.