Practice Page
Directions: Read carefully. Choose the best answers.

1.
Given f (x) = x2 + 3x + 4, find f (-4).
buildfunction

Choose:
 
0
 
4
 
8
 
 
12
 

 

 

2.
Which expression represents f (3a) when f (x) = | 2x2 - 3x | ?
 

Choose:
 
18a2 - 9a
6a(a - 1)
 
| 9a(2a - 1) |
| 3a(3a - 2) |

 

 

3.
Given f (x) = x2 and h(x) = 4x, which expression represents g(x) when g(x) is defined as:
pilew
buildfunction2
Choose:
 
3x2
 
4x3
 
6x2
 
8x3

 

 

4.
Given sr, find m(2a + 1).

Choose:
 
6a
 
6c
 
4new
 
6d



5.
Given f (x) = 3x2 - 2x, express f (x + h).
buildfunction3

Choose:
 
3x2 + 3h2 - 2x - 2h
 
3x2 + 2xh + h2 - 2x - 2h
 
3x2 + 6xh + 3h2 - 2x - 2h
 
3x2 + 6xh + 3h2 - 2x + 2h

 

 

6.
Given h(x) = x3 and k(x) = x + 3, find 7a. Assume k(a) ≠ 0.
 
Choose:
 
(a3 + 27) / (a + 3)
 
(a + 3)3 / a
 
a3 + 9a2 + 27a+ 24
 
a2 + 6a + 9

 

 

7.
If m(x) = | 4 - x | and p(x) = x + 2, express
t(3a + 2) when t(x) = 4m(x) - 2p(x).
buildfunction4

Choose:
 
4 | 6 - 3a | - 6a - 8
 
4 | 6 - 3a | - 6a + 8
 
4 | 3a - 2 | - 6a + 8
 
4 | 2 - 3a | - 6a - 8

 

 

8.
Given: pf     Find: f (-5) and f (2.5).
 

Choose:
 
-13 and -1.25
40 and 7
 
10 and 9.5
40 and 9.5

 

 

9.
Given:  fxx  

Express fxx2.

buildfunctions4
Choose:
 
2x + h + 2
x2 + 2xh + h2 + 2x + 2h
 
2xh + h2 + 2h
2xh + h2 + 4x + 2h

 

 

10.
Given f (x) = 2-x, express f (-(x + 1)) • f (-3x).
 

Choose:
 
2 x + 1 + 23x
2 4x - 1
 
2 4x + 1
2 3x - 1



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