Here customer to account one to many relation so for each entity one table, total 2 tables.
Next account to statements one to many relation.and here statements is weak entity.so for statements one table has been created,where number attribute of account which is Pk,add with id of statements entity and formed candidate key of that new table.and for for account already one table has been created previously .
Next phones and customer in many to many relation ,so we already created a table for customer previously,now one table for relation has and one table for phones has been created. So 2 more new tables.
So total 5 tables will be needed.