Precalculus Practice Exam

Part 4 Test 2 Time: 2 hours


  1. Given the equation, tex2html_wrap_inline215 find the following:

  2. Given that the point tex2html_wrap_inline229 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_inline249 as an algebraic expression in x.


    Answer:

    displaymath210

  4. A man, standing at the base of a building, looks up, with an angle of elevation of 42 degrees, to the top of the building across the street that is 2,000 feet high. How far apart are the buildings?


    Answer: The two buildings are 2,221.22 feet apart.

  5. A total of $40,000 is invested for 10 years at 14% per year compounded weekly. How much interest will be earned during the 10 years?


    Answer: The interested earned after 10 years will be $121,903.13.

  6. Solve for x in the inequality

    displaymath211


    Answer: The set of solutions consists of all numbers x satisfying tex2html_wrap_inline291 , or in interval notation: tex2html_wrap_inline293

  7. Solve for x: tex2html_wrap_inline297 . Explain how you checked your answer, step-by-step.


    Answer: tex2html_wrap_inline299 .

  8. Assume that the world population at time t is given by tex2html_wrap_inline303 .
  9. Find the rational zeros of tex2html_wrap_inline305 .


    Answer: The only rational solution for the equation f(x) is 1.

  10. Solve the following system of equations for tex2html_wrap_inline309 and z:

    eqnarray111


    Answer: tex2html_wrap_inline313 .


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Wed Jun 18 16:29:17 MDT 1997

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