College Algebra, 4th Edition

Practice Test B

1. Find the x-intercepts of the graph of $f(x)=x^2+5x+3.$

   1. ${\displaystyle \frac{-5\pm i\sqrt{13}}{2}}$

   2. ${\displaystyle \frac{-5\pm \sqrt{13}}{2}}$

   3. ${\displaystyle \frac{-5\pm i\sqrt{37}}{2}}$

   4. ${\displaystyle \frac{-5\pm \sqrt{37}}{2}}$

2. Which is the graph of $f(x)=4-{(x-2)}^2$?

   1. 

   2. 

   3. 

   4. 

3. Find the vertex of the parabola described by $y=6x^2+12x-5.$

   1. $(-1,-11)$

   2. $(1,-5)$

   3. $(-1,13)$

   4. (1, 13)

4. Which of the following is not in the domain of the function $f(x)={\displaystyle \frac{x^2}{x^2+x-6}}?$

   1. $-3$

   2. 0

   3. 2

   1. I and II

   2. I and ...