Work out the problem on paper and then choose the letter for your answer. After you have successfully answered all questions, look at the top of the page to see how you did.

When you are finished with the quiz, click "Return to Table of Contents" if you would like to return to the Table of Contents to try another quiz.

1. If f(x) = 3x² - 12x + 7, find f(3).

   1.   ?    -2
   2.   ?    52
   3.   ?    46
   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) = 1900 - 6x, where x is between 1 and 300. Find the price of the camera for a demand of 180 cameras.

   1.   ?    $820
   2.   ?    $2980
   3.   ?    $286.67
   4.   ?    None of the answers given; click to see the solution.

3. Using the same price-demand function as in question #2, that is, p(x) = 1900 - 6x, what will the demand be if the price is set at $910 per camera?

   1.   ?    165
   2.   ?    -3560
   3.   ?    984
   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) = 1900 - 6x, what is the revenue function for the camera?

   1.   ?    R(x) = 1900x - 6x²
   2.   ?    R(x) = 1900 - 6x²
   3.   ?    R(x) = 1900 - 6x
   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) = -0.2x²+ 90x and the cost function for the item is C(x) = 22x + 1270, write the profit function for the item.

   1.   ?    P(x) = -0.2x²+ 68x - 1270
   2.   ?    P(x) = -0.2x²+ 68x + 1270
   3.   ?    P(x) = -0.2x² + 112x - 1270
   4.   ?    None of the answers given; click to see the solution.