Precalculus for Business, Life, and Social Sciences
MATH 1643

Spring 2014
Solution Key for Long Answer Review for Final Exam in Math 1643
1) i) 18
2)
3)
4)
5)
iv) 6 + 5 a 2
ii) 21 iii)
14 x + 18 7 h
2
x=2 ; y=4 ; (2,0) ; (0,4)
( 10 , 34 ) ; 40 ; 4 x 3 y + 62 = 0
6)
7) 28 times the sine of 36 degrees
8) C = ( 4 , 10 ) r = 12
9)
Precalculus for Business, Life, and Social Sciences
MATH 1643

Spring 2014
Math 1643 Final Review  Multiple Choice ( Spring, 2013 )
1) Find all solutions for the equation: 7 2 x + 3 = 21
A)x=3 andx=3 B)x=199 C)x=6
D)x=% E)x=3
2) Find the equation of a line perpendicular to the line with equation 4 x  8 y = 11.
A)y=2x+l6 B)3x
Precalculus for Business, Life, and Social Sciences
MATH 1643

Spring 2014
Long Answer Review for the Final Exam in Math 1643
and t ( x ) = 2 x 2 , then find:
1) If f ( x ) = 4 5 x and h ( x ) =
i)
( f h) ( 4 )
iii) h 1 ( x )
ii) f h ( 9 )
2) Given f ( x ) = 16 7 x 2 + 18 x , find
(
3) Find the average rate of change of f ( x )
Precalculus for Business, Life, and Social Sciences
MATH 1643

Spring 2014
Solution Key for Final Review Multiple Choice Math 1643
1. E
2. D
3. E
4. C
5. C
6. D
7. D
8. B
9. C
10.
11.
12.
13.
14.
15.
16.
17.
18.
D
C
A
A
C
A
A
D
E
19.
B
33. ( , 0 )
20.
21.
22.
23.
24.
25.
26.
B
E
B
(,3)
A
A
A
34.
35.
36.
37.
38.
39.
40.
27. D
28