Practice Test A

1. ${(x + 3)}^{2} + {(y - 4)}^{2} = 2$ ${(x + 3)}^{2} + {(y - 4)}^{2} = 2$
2. Symmetric about the x-axis
3. x-intercept: $- 1, 0, 3;$ $- 1, 0, 3;$ y-intercept: 0
4.
5. $y = - x + 9$ $y = - x + 9$
6. $y = 4 x - 9$ $y = 4 x - 9$
7. $- 36$ $- 36$
8. $- 1$ $- 1$
9. $x^{4} - 4 x^{3} + 2 x^{2} + 4 x$ $x^{4} - 4 x^{3} + 2 x^{2} + 4 x$
10.
1. $f (- 1) = - 3$ $f (- 1) = - 3$
2. $f (0) = - 2$ $f (0) = - 2$
3. $f (1) = - 1$ $f (1) = - 1$
11. [0, 1)
12. 2
13. Even
14. Increasing on $(- \infty, 0) \cup (2, \infty),$ $(- \infty, 0) \cup (2, \infty),$ decreasing on (0, 2)
15. Shift the graph of $y = \sqrt{x}$ $y = \sqrt{x}$ 3 units to the right, stretch the graph of $y = \sqrt{x - 3}$ $y = \sqrt{x - 3}$ vertically by a factor of 2, and shift the graph of $y = 2 \sqrt{x - 3}$ $y = 2 \sqrt{x - 3}$ 4 units up.
16. 2.5 sec
17. 2
18. $f^{- 1} (x) = \frac{x}{x - 2}$ $f^{- 1} (x) = \frac{x}{x - 2}$
19. $A (x) = 100 x + 1000$ $A (x) = 100 x + 1000$
20.
1. $87.50
2. 110 mi

..................Content has been hidden....................

You can't read the all page of ebook, please click here login for view all page.

Table of Contents for Practice Test A