13. Multiply the following polynomials and simplify:
(1x2 + 6)(1x4 + 5)
x6 + 6x4 + 5x2 + 30
(6x4 + 10)(5x3 + 4x)
30x7 + 24x5 + 50x3 + 40x
14. Divide:
25x2 - 35x + 10 / 5x - 2
5x - 5
15. Find the greatest common factor of the following terms:
66, 28
2
42x3y10, 30x3y7
6x3y7
16. Factor the following polynomials:
45x4 + 15x3 - 100x2
45x2(x -
4
3
)(x +
5
3
)
x2 - x - 72
(x - 9)(x + 8)
x5 + 7x4 - 78x3
x3(x + 13)(x - 6)
17. For question 16, exercises b) and c), solve for x:
x =
9
and
-8
x =
0
,
-13
and
6
18. You are seating 3 people on 3 chairs. How many different ways can those people sit?
6
19. Use the following data to construct a box and whiskers plot:
18, 33, 21, 9, 35, 15, 1, 23
20. A bag contains 3 blue balls, 3 red balls, and 7 white balls. You pick a ball from the bag and return it to the bag. What is the probability of picking:
A white ball?
53.85%
A blue ball or red ball?
46.15%
Two red balls?
5.33%
A blue ball and a white ball?
12.43%
21. Solve and graph the following systems of linear equations:
x + y = -18 x - y = -3
A(-10.5,-7.5)
12x - 10y = 4 2x + 8y = 20
B(2,2)
22. Write the following fractions in simplest form:
50x4y
25x6y
2
x2
x4 - 2x3 - 3x2
x5(x - 3)
(x + 1)
x3
23. Solve the equation below in two different ways. First, solve it using the quadratic formula. Secondly, solve it by completing the square.
-30 = x2 - 11x
x1 = 5, x2 = 6
24. Convert the following repeating decimal into a fraction:
x =
0.335
302
900
25. Solve the following equation:
3
x
- 15 = 1
x
+ 9
x = 144
26. Rationalize the denominator of each fraction below:
3
6
25
3
3
2
25
27. Use a trigonometric ratio to find x:
x = 24.00 cm
28. The sum of two consecutive even integers is 18. What are the integers? (Hint: use 2x as the first even integer)
a=8, b=10
29. After you leave your house, you walk 12 blocks west and 9 blocks north. How far are you from your house?
I am
15
blocks from my house.
30. The sides of a square are increased by 7 ft. The area of the newly created square is 169ft2. What was the original length of one side of the square?
13. Multiply the following polynomials and simplify:
(4x4 + 6x2 + 2x)-8
-32x4 - 48x2 - 16x
(9x4 + 6x2 + 10)(8x5 + 8x3)
72x9 + 120x7 + 128x5 + 80x3
14. Divide:
10x3 - 6x2 + 35x - 21 / 5x - 3
2x2 + 7
15. Find the greatest common factor of the following terms:
24, 22
2
45x4y6, 54x2y10
9x2y6
16. Factor the following polynomials:
6x5 + 24x4 + 15x3
6x3(x -
-4 +
6
2
)(x -
-4 -
6
2
)
x2 - 2x - 63
(x - 9)(x + 7)
x6 - 22x5 + 105x4
x4(x - 7)(x - 15)
17. For question 16, exercises b) and c), solve for x:
x =
9
and
-7
x =
0
,
7
and
15
18. You can purchase your ice cream in a cup or a cone. Orders can be one, two, three, or four scoops. Flavors can be chocolate or vanilla. How many choices do you have?
16
19. Use the following data to construct a box and whiskers plot:
31, 29, 7, 36, 21, 11, 16, 13, 32
20. Suppose you toss a coin and spin a spinner numbered 1 through 9
What is the probability of getting tails and 4?
5.56%
What is the probability of getting heads and an odd number?
22.22%
What is the probability of getting heads and a multiple of 2?
22.22%
What is the probability of getting heads and a prime number?
22.22%
What is the probability of not tails and not 6?
44.44%
What is the probability of getting not heads and not a whole number?
0%
What is the probability of heads or tails and a whole number?
100%
What is the probability of getting heads?
50%
21. Solve and graph the following systems of linear equations:
x + y = -6 x - y = -7
A(-6.5,0.5)
6x - 7y = 17 5x + 2y = 20
B(3.7,0.74)
22. Write the following fractions in simplest form:
100x7y9
25x7y8
4y
x4(x + 1)
x3 - 6x2 - 7x
x3
(x - 7)
23. Solve the equation below in two different ways. First, solve it using the quadratic formula. Secondly, solve it by completing the square.
x2 + 5 = -6x
x1 = -5, x2 = -1
24. Convert the following repeating decimal into a fraction:
x =
8.5
77
9
25. Solve the following equation:
17
x
+ 1 = 15
x
+ 7
x = 9
26. Rationalize the denominator of each fraction below:
7
1 -
7
-
7 + 7
7
6
27. Use a trigonometric ratio to find x:
x = 29.44 cm
28. The sum of two consecutive odd integers is 28. What are the integers? (Hint: use 2x+1 as the first odd integer)
a=13, b=15
29. After you leave your house, you walk 12 blocks north and 5 blocks west. How far are you from your house?
I am
13
blocks from my house.
30. The length of a rectangle is 3 more than thrice its width. The area of the rectangle is 36ft2. What is the length and width of the rectangle?
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