Travis has 157 books that he needs to pack into boxes. each box can hold 9 books. how many boxes will travis need?

The train station clock runs too fast and gains 5 minutes every 10 days. how many minutes and seconds will it have gained at the end of 9 days?

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?