Precalculus Practice Exam

Part 3 Test 3 Time: 1 hour

  1. Solve the following equation for x:


  2. The half-life of tex2html_wrap_inline48 Ra is 1,620 years. How long before the sample reduces to 67% of the original amount?

  3. Find the special parabola tex2html_wrap_inline50 that contains the points (3,26), (-2,21), and (1,6).

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Sun Jun 22 21:14:04 MDT 1997

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