<p><strong>Note</strong>: about 46 minutes into the video, Greg says that the compound interest formula when it's compounded every three months is (1.04)<sup>4</sup>. However, since there are four compounding periods per year, the rate should actually be 0.12/4 = 0.03 - and hence we should have written (1.03)<sup>4</sup> instead.<br />
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<strong>Second Note:</strong> At 34:00, the "-" at the start of the two questions are bullet points and NOT minus signs, so the two questions are:</p>
<ul>
<li>$30$ is what percentage of $15$?</li>
<li>$15$ to $30$ represents a percent increase of what?</li>
</ul>
