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1. If f(x) = 4x² - 15x + 3, find f(3).

   1.   ?    -6
   2.   ?    102
   3.   ?    84
   4.   ?    None of the answers given; click to see the solution.

2. An analyst has determined that the price-demand function for a certain digital camera is p(x) = 1850 - 5x, where x is between 1 and 300. Find the price of the camera for a demand of 210 cameras.

   1.   ?    $800
   2.   ?    $2900
   3.   ?    $328
   4.   ?    None of the answers given; click to see the solution.

3. An analyst has determined that the price-demand function for a certain digital Using the same price-demand function as in question #2, that is, p(x) = 1850 - 5x, what will the demand be if the price is set at $800 per camera?

   1.   ?    210
   2.   ?    -2150
   3.   ?    1045
   4.   ?    None of the answers given; click to see the solution.

4. Using the same price-demand function as in question #2, that is, p(x) = 1850 - 5x, what is the revenue function for the camera?

   1.   ?    R(x) = 1850x - 5x²
   2.   ?    R(x) = 1850 - 5x²
   3.   ?    R(x) = 1850 - 5x
   4.   ?    None of the answers given; click to see the solution.

5. If it has been determined that the revenue function for a certain item is R(x) = -0.4x² + 120x and the cost function for the item is C(x) = 43x + 1500, write the profit function for the item.

   1.   ?    P(x) = -0.4x² + 77x - 1500
   2.   ?    P(x) = -0.4x² + 77x + 1500
   3.   ?    P(x) = -0.4x²+ 163x - 1500
   4.   ?    None of the answers given; click to see the solution.