Lesson 14 Quiz-7th Grade

Which expression is equivalent to 3n + 2(1-4n)

• 3n+2-8n

  -5n+2

• 3n+2-4n

  2-1n

• 3n+2(-3n)

  3n-6n

  -3n

• 3n+2-8n

  11n+2

Tags

CCSS.6.EE.A.3

2(3-4y)=6-4y​ (a)  

2(3-4y)=6-8y​ (b)  

• False
• True

Tags

CCSS.6.EE.B.5

3+5(9+2n)=48+10n​ (a)  

3+5(9+2n)=48+5n​ (b)  

• True
• False

9-3(y-2)=15-3y​ (a)  

9-3(y-2)=3-3y​ (b)  

• True
• False

Tags

CCSS.6.EE.B.5

24y+36 represents the cost of 1 dozen eggs.

How can this be re-written using factoring to show the cost of 1 egg?

• 12(2y+3)

  The cost of 1 egg is 2y+3

• 12(2y+36)

  The cost of 1 egg is 2y+36

• y(24+36)

  The cost of one egg is 50

Tags

CCSS.7.EE.A.1

The side length of a square is represented by the expression n-1.5.

Which are equivalent expressions to find the perimeter of the square?

(Hint: Perimeter=s+s+s+s or Perimeter=4s)

There are 3 correct answers here.

• (-1.5n)+(-1.5n)+(-1.5n)+(-1.5n)

• 4(n-1.5)

• 4n-6

• 1.5n-4

• 4n-1.5

Tags

CCSS.6.EE.A.4