Fill in the blank with the best word to complete the sentence. White blood cells protect against and aid in blood clotting when injuries are sustained. Write an expression that represents an output for each statement (The answers might vary for numbers 3-5). 1. John started with $100 and earned $100 each day. 2. John's friend started with $100 and doubled his money each day. 3. John's son started with $100 and gradually increased his money each day. 4. John's uncle started with $100 and smoothly increased his money each day. 5. John's dad started with $100 and his money fluctuated through various extremities each day.