Precalculus Practice Exam

Part 4 Test 4 Time: 2 hours

  1. Given the equation, tex2html_wrap_inline217 find the following:

  2. Given that the point tex2html_wrap_inline225 is located on the terminal side of the angle t, find a point on the terminal side of the following angles:

  3. Write tex2html_wrap_inline245 as an algebraic expression in x.


  4. A man, standing on the top of a building that is 4,000 feet high, looks down, with an angle of depression of 30 degrees, to the base of the building across the street. How far apart are the buildings?

    Answer: The buildings are approximately 6,928 feet apart.

  5. A total of $25,000 is invested for 10 years at 12% per year compounded monthly. How much interest will be earned during the 10 years?

    Answer: The interest earned after 10 years will be $57,509.67.

  6. Solve for x in the inequality


    Answer: The inequality will be always true except when x=2, and x=-2.

  7. Assume that the population of a town in Texas is given by tex2html_wrap_inline299 , where t is time in years, and t=0 corresponds to the year 1900.
  8. Find the zeros of


  9. Solve the following system of equations for tex2html_wrap_inline319 and tex2html_wrap_inline321


    Answer: tex2html_wrap_inline323 .

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Tue Jun 24 23:15:36 MDT 1997

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