Learn Functional Programming with Elixir

Answers for Chapter 2, Working with Variables and Functions

• You’ll find how many dollars Sarah has spent by executing the following expression:

  work_with_functions/answers/exercise_2.exs

  (10 * 0.1) + (3 * 2) + 15

• You can show Bob’s travel stats with the following code:

  work_with_functions/answers/exercise_3.exs

  distance = 200
  hours = 4
  velocity = distance / hours
  IO.puts """
  Travel distance: #{distance} km
  Time: #{hours} hours
  Average Velocity: #{velocity} km/h
  """

• The apply_tax function should be like this:

  work_with_functions/answers/exercise_4.exs

  apply_tax = fn price ->
    tax = price * 0.12
    IO.puts "Price: #{price + tax} - Tax: #{tax}"
  end
  
  Enum.each [12.5, 30.99, 250.49, 18.80], apply_tax

• Your