Download ALGEBRA2 PRACTICE FINAL EXAM 1 PART I

ALGEBRA2 PRACTICE FINAL EXAM 1
PART I
Answer all part I questions. Place answers on the answer sheet. Show all work on loose leaf and
attach to the answer sheet.
1. Solve the equation for x: 6 x  216
(1) -3
(2) 3
(3) -4
(4) 4
2. Given the function f ( x)  (5  x) 2 . Find the numerical value of f ( 3) .
(1) -4
(2) 4
(3) 14
(4) 64
3. Find the product: (2  5i )(6  3i ) .
(1) 27
(2) 12 – 15i
4. If f ( x)  x 2 find f
1I
F
G
H25J
K.
50
3
(2)
3
(1)
3
50
(3) 12 – 39i
(3)
1
25
(4) 27 – 24i
(4) 125
5. The roots of the equation 2 x 2  5x  k  0 will be imaginary when k =?
(1) -3
(2) -2
(3) 3
(4) 4
6. If x  log 6 53 , find the value of x to the nearest hundredth.
(1) .45
(2) .54
(3) 2.22
(4) 1.83
7. In which quadrant does the sum of 2  3i , and ,4  7i lie?
(1) I
(2) II
(3) III
(4) IV
b g
8. The expression 3x  5 in expanded form equals:
(1)9x2+30x+25
(2)9x2+30x+5
(3)9x2+25
2
t 2  25
9. Reduce the algebraic fraction to lowest terms: 2
.
2t  9t  5
5
t 5
(1) -t – 4
(2)
(3)
3
2t  1
10. The graph of the equation 3x 2  5 y 2  35 is the conic section:
(1) parabola
(2) circle
(3) ellipse
(4)6x+10
(4)
t 5
2t  1
(4) hyperbola
11. Express 2 log x  3 log y as a single logarithm.
(1) log(2x – 3y)
x2
(2) log 3
y
(3) log x 2 y 3
(4) log
2x
3y
12. If y varies inversely with x, and y = 7 when x = 2, find the value of y when x = 4.
(1) 1.14
(2) 3.5
(3) 14
(4) 56
13. If f ( x )  x 2  3x and g( x)  3x find f ( g (3)) .
(1) -54
(2) -9
(3) 18
(4) 54
14. Find the solution set for the inequality x 2  2 x  15  0 .
(1) x  5orx  3
(2) x  3orx  5
(3) 5  x  3
(4) 3  x  5
15. Find the value of angle X to the nearest degree if
arc A = 2100 and arc B = 1500.
(1) 30 
(2) 60 
(3) 180 
(4) 360˚
A
X
16. What is the solution set for the equation
(1) -1
(2) 11
17. Simplify and express in a + bi form:
(1)
7 22
 i
41 41
(2)
7 22
 i
41 41
B
x 8  4  7.
(3) 17
(4) 41
2  3i
.
4  5i
1 x

18. Simplify the complex fraction: 2 x 2
5
x
2
1 x
1 x
(1)
(2)
5
10
(3)
1 2
 i
3 9
(4)
23 2
 i
41 41
(3)
5 x
2x
(4)
1  x2
5
19. If log x 8  3 , find the value of x.
(1) 2
(2) 24
(3) 512
(4) 6561
20. Find the domain of f ( x )  x  9 .
(1) x  -9
(2) x<-9
(3) x  -9
(4) x>-9
21. Solve for all values of x given the equation: 2 x  7  15 .
(1) {11}
(2) {4,11}
(3) {-4,11}
(4) {-11,4}
3
.
7
3 7
(4)
7
22. Rationalize the denominator and express the answer in simplest terms:
(1) 3
(2)
3
7
(3)
3 7
49
PART II
Show all work in the space provided on the answer sheet.
23. Solve the following absolute value inequality and graph the solution set on the real number
line: x  2  7
24. For the equation 2 x 2  6x  7  0 , find a) the sum of the roots and b) the product of the
roots
25. Write in simplest form: 2 72  3 32 .
26. Factor the following expression completely: x 3  6x 2  40x .
PART III
Show all work in the space provided on the answer sheet.
27. Solve the following equation and express the roots in simplest a + bi form. x 2  4 x  12  0
28. The table below represents data gathered by a research company.
a) Graph the scatter plot of the given information.
b) Find the linear equation of best fit for the given data. Round decimals to two places.
c) Find the correlation coefficient “r” correct to four decimal places.
d) Use the equation found in part b, with the rounded values, to estimate the value of y when
x = 15.
x
3
5
7
9
11
y
4
6
32
55
83
EASTER ASSIGNMENT ANSWER SHEET
This assignment is due Monday April 20th. NO LATE assignments will be accepted. This will be
graded and counted as a quiz.
PART I:
Place the choice of the correct answer on the line provided. Show all work on loose leaf and attach
to this answer sheet.
1. ______
9. ______
16. ______
2. ______
10. ______
17. ______
3. ______
11. ______
18. ______
4. ______
12. ______
19. ______
5. ______
13. ______
20. ______
6. ______
14. ______
21. ______
7. ______
15. ______
22. ______
8. ______
PART II:
Show all work in the space provided.
23.
24.
25.
26.
PART III:
Show all work in the space provided.
27.
28.