1. 8th grade Warm Up
4/15/13
0.78v
If v represents the number’s position (1st, 2nd,3rd,etc.) in the sequence, which pattern of numbers does the expression describe?
A) 4.5, 5.34, 5.89, 6.54
B) 4.56, 5.34, 5.89, 6.56
C) 4.34, 5.12, 5.9, 6.68

2. The expressions below describes a pattern of numbers.
0.50v
1. If v represents the number’s position in the sequence, which pattern of numbers does the expression describe?
A) 2.5, 3.2, 3.5, 3.7
B) 2.8, 3.3, 3.8, 4.3
C) 2.9, 3.4, 3.7, 4.1
1.24w
2. If w represents the number’s position in the sequence, which pattern of numbers does the expression describe?
A) 4.67, 5.92, 7.23, 8.64
B) 4.78, 7.87, 9.67,
C) 4.69, 5.93, 7.17, 8.41

3. 2.34k + 6.7
If k represents the number’s position in the sequence, which pattern of numbers does the expression describe?
A) 9.04, , ,
B) 9.04, , ,
C) 9.04, , ,
9.78f + 1.2
4. If f represents the number’s position in the sequence, which pattern of numbers does the expression describe?
A) , , ,
B) , , ,
C) , , ,

4. 5. Which of the following is the symbolic representations for the phrase “six less than 5 times a number”?
A) 6n - 5
B) 5n - 6
C) 5 x 6=n
6. Which of the following is the symbolic representations for the phrase “eight more than three times a number”?
A) 3n + 8
B) 8n + 3
C) 8(3n)
7. Which of the following is the symbolic representations for the phrase “thirteen less than two times and number”?
A) n
B) 13n – 2
C) 2n - 13

5. 8. Which of these is equivalent to the following?
2(x + 3)
A) 2x + 6
B) 2x + 3
C) 3x + 2
9. Which of these is equivalent to the following?
5(2x + 3)
A) 7x + 8
B) 10x + 3
C) 10x + 15
10. Which of these is the equivalent to the following?
4(x + 3) – 2(x + 3)
A) 4x + 12 – 2x - 6
B) 2x + 6
C) 2x – 6
11. Which of these is equivalent to the following?
9(3x + 2) – 2(x + 2)
A) 27x x - 4
B) 25x + 14
C) 27x + 12

6. Amy and Anna are cousins.
Anna is k years old
Amy is twice as old as Anna
Which expressions represents Amy’s age?
A) 2k
B) k + 2
k – 2
13. Ammar has a $50 gift certificate to go to the movies
Each movie ticket costs $7
y represents the number of movies that he went to see.
Which expressions represents Amy’s age?
A) 50y - 7
B) y
7y - 50

7. If y = 3x + 7, what is the value of y when x equals 5?
A) y= 34
B) y= 22
C) y= 45
If y = 6x² + 6, what is the value of y when x equals 2?
A) y= 34
B) y= 32
C) y= 36
If y = 3x² + 15, what is the value of y when x equals 3?
A) y= 42
B) y= 47
C) y= 56

8. The sides of a rectangle have a length of x + 7 units and a width of 3x + 2 units. Which of the following represent the perimeter of the rectangle?
A) 4x + 9 units
B) 3x + 14 units
4x + 14 units
19. Simplify the following expression:
-5( 25 ) + 5 ( 2² x 2)
3x + 2
x + 7
Simplify the following expression:
-4 (27) – 3(2² x 8)