## Precalculus Practice Exam

Part 2 Test 7 Time: 1 hour

1. A ball that is thrown upward follows the path , where h(t) represents the height of the ball above the ground at time t, and t represents the time since the ball was thrown. How high above the ground did the ball reach?

Answer: The maximum height that the ball reached was 17 units.

2. Find a degree polynomial with real coefficients that has zeros 0, -3i, and 2-i.

Answer: .

3. Divide . 4. a)
List the set of possible rational zeros for Answer: .

b)
Factor completely.

5. a)
Find the equations of all vertical, horizontal, or slant asymptotes of the graph of Answer: The equations of the vertical asymptotes are x=1, and x=-1. There are no horizontal asymptotes. The equation of the slant asymptote is y=3x.

b)
Explain how you used the graph of f(x) to verify your findings.

Answer: By looking at the graph of f(x), the values of f(1), and f(-1) are undefined. The graph gets closer and closer to the lines x=1, and x=-1 but it never crosses it.

If you would like to practice on exams for Parts 1, 3 or 4, click on Menu. It will take you back to the original menu.

Wed Oct 8 15:12:26 MDT 1997