title: "Adding" two functions together in Scheme
body: <p>I am going through a practice exam for my programming languages course. One of the problems states:</p>
  <blockquote>
  <p>Define a function named <code>function+</code> that “adds” two functions together and returns this composition. For example:</p>
  <pre><code>((function+ cube double) 3)
  </code></pre>
  <p>should evaluate to 216, assuming reasonable implementations of the functions <code>cube</code> and <code>double</code>.</p>
  </blockquote>
  <p>I am not sure how to approach this problem. I believe you are supposed to use the functionality of lambdas, but I am not entirely sure.</p>