HELP ME PLS

Ron has 8 caps and 4 of his caps are blue. thes rest of his cap are red. how many of ron's caps are red

There are 8 movies that you would like to see currently showing in theatres. in how many different ways can you choose a movie to see this saturday and one to see this sunday?

Problem 3 a bank charges a service fee of $7.50 per month for a checking account. a bank account has $85.00. if no money is deposited or withdrawn except the service charge, how many months until the account balance is negative