Is this a typo? (Math problem)

Test Preparation SAT Preparation
1

<p>there are 50 bacteria in a petri dish. If the population doubles every 2 days, the number of bacteria can be t/2 expressed as 50(2), where t is the number of days that have passed since start of experiment. how many bacteria will be present after 6 days?</p>

<p>isn't 50(2) supposed to be 50(2)^t/2? It doesn't tell you how t relates to the second expression "50(2). </p>

<p>The answer explanation said that: this problem conveniently provides a formula: 50(2)^6/2 = 50(2)^3 = 400</p>

<p>so shouldn't their function be expressed as 50(2)^t/2</p>

<p>(Non BB question)</p>

2

<p>yes .</p>

3

<p>Want to know your problem here?</p>

<p><a href=“Non%20BB%20question”>quote</a>

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</p>

4

<p>no, his problem is that it is a typo. there are typos in the blue books as well</p>

5

<p>Not in the original BB, and the new BB has a list of typos and their corrections</p>

<p><a href=“http://images.barnesandnoble.com/pimages/resources/PDF/09b_640_SAT_SG_Errata_WEB_090728.pdf[/url]”>http://images.barnesandnoble.com/pimages/resources/PDF/09b_640_SAT_SG_Errata_WEB_090728.pdf&lt;/a&gt;&lt;/p&gt;

6

<p>Thanks guys</p>