13. Multiply the following polynomials and simplify:
(4x3 + 3x)(4x5 + 8x)
16x8 + 12x6 + 32x4 + 24x2
(8x4 + 10x3 + x2)(5x4 + 9x2)
40x8 + 50x7 + 77x6 + 90x5 + 9x4
14. Divide:
9x2 + 33x + 28 / 3x + 7
3x + 4
15. Find the greatest common factor of the following terms:
65, 60
5
45x10y5, 55x4y5
5x4y5
16. Factor the following polynomials:
4x5 - 38x4 + 88x3
4x3(x -
11
2
)(x - 4)
x2 - 16x + 63
(x - 9)(x - 7)
x4 + 19x3 + 70x2
x2(x + 5)(x + 14)
17. For question 16, exercises b) and c), solve for x:
x =
9
and
7
x =
0
,
-5
and
-14
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, vanilla, strawberry or peach. How many choices do you have?
32
19. Use the following data to construct a box and whiskers plot:
25, 23, 7, 16, 29, 26, 27
20. A bag contains 5 blue balls, 4 red balls, and 6 white balls. You pick a ball from the bag and put it in your pocket. What is the probability of picking:
A white ball?
40.00%
A blue ball or red ball?
60.00%
Two red balls?
5.71%
A blue ball and a white ball?
14.29%
21. Solve and graph the following systems of linear equations:
x + y = -1 x - y = 4
A(1.5,-2.5)
9x - 4y = -18 10x + 6y = 2
B(-1.06,2.11)
22. Write the following fractions in simplest form:
12x2y3
36x9y8
1
3x7y5
(x + 2)3
(x + 2)4
1
x + 2
23. Solve the equation below in two different ways. First, solve it using the quadratic formula. Secondly, solve it by completing the square.
-x2 = -5x + 4
x1 = 4, x2 = 1
24. Convert the following repeating decimal into a fraction:
x =
0.286
258
900
25. Solve the following equation:
-15
x
+ 6 = -5
x
- 4
x = 1
26. Rationalize the denominator of each fraction below:
35
25
7
27. Use a trigonometric ratio to find x:
x = 13.50 cm
28. The sum of two consecutive odd integers is 36. What are the integers? (Hint: use 2x+1 as the first odd integer)
a=17, b=19
29. After you leave your house, you walk 5 blocks north and 12 blocks east. How far are you from your house?
I am
13
blocks from my house.
30. The length of a rectangle is 6 more than twice its width. The area of the rectangle is 260m2. What is the length and width of the rectangle?
13. Multiply the following polynomials and simplify:
7x2(4x + 8)
28x3 + 56x2
(4x5 + 8x4 + 7x3)(9x4 + 5x + 9)
36x9 + 72x8 + 63x7 + 20x6 + 76x5 + 107x4 + 63x3
14. Divide:
8x3 + 16x2 + 24x + 48 / 4x + 8
2x2 + 6
15. Find the greatest common factor of the following terms:
12, 84
12
52y5, 25y
y
16. Factor the following polynomials:
60x3 + 28x2 + 2x
60x(x -
-7 +
19
30
)(x -
-7 -
19
30
)
x2 - 3x - 10
(x + 2)(x - 5)
x8 - 2x7 - 99x6
x6(x - 11)(x + 9)
17. For question 16, exercises b) and c), solve for x:
x =
-2
and
5
x =
0
,
11
and
-9
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, vanilla, strawberry, peach or kiwi. How many choices do you have?
40
19. Use the following data to construct a box and whiskers plot:
13, 38, 24, 19, 33, 28, 4, 5
20. Suppose you toss a coin and spin a spinner numbered 1 through 8
What is the probability of getting tails and 2?
6.25%
What is the probability of getting tails and an even number?
25%
What is the probability of getting heads and a multiple of 3?
12.5%
What is the probability of getting heads and a prime number?
25%
What is the probability of not tails and not 3?
43.75%
What is the probability of getting not tails 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 = 12 x - y = -19
A(-3.5,15.5)
x - 6y = -15 2x + 8y = 14
B(-1.8,2.2)
22. Write the following fractions in simplest form:
22x6y7z4
44x7y9z2
z2
2xy2
(x2 + 16x + 64)
(x + 8)
x + 8
23. Solve the equation below in two different ways. First, solve it using the quadratic formula. Secondly, solve it by completing the square.
16x + 39 = -x2
x1 = -3, x2 = -13
24. Convert the following repeating decimal into a fraction:
x =
0.39
39
99
25. Solve the following equation:
2 +
3x - 2
= 6
x = 6
26. Rationalize the denominator of each fraction below:
49
6
49
6
6
27. Use a trigonometric ratio to find x:
x = 15.50 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 6 blocks east and 8 blocks north. How far are you from your house?
I am
10
blocks from my house.
30. The length of a rectangle is 2 more than twice its width. The area of the rectangle is 144ft2. What is the length and width of the rectangle?
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