title: Mathematical Expression Using Lists
body: <p>I realize that the output is simply the base_q - (base_q * q_growth_rates), but I'm having trouble coding the multiplication and subtraction of the lists.</p>
  <p>#Build a list named quantities to mimic the output shown below</p>
  <p>#Using base_q and q_growth_rates generate the following list</p>
  <p>this is what I have</p>
  <pre><code>base_q = 100
  q_growth_rates = [-0.2, -0.1, 0.0, 0.09999999999999998, 0.2]
  
  quantities = []
  for num in q_growth_rates: 
     base_q - (base_q * num)
  </code></pre>
  <p>This is the list it is supposed to generate after</p>
  <pre><code>print (quantities)
  [80.0, 90.0, 100.0, 110.0, 120.0]
  </code></pre>