Unit 4 Mock Quiz Review

If circles are 2 grams and triangles are 3 grams, create an equation for this hanger diagram.

• 3x + 11 = 11 + 3x

• 8 + 2x = 4x

• 12 + 4x = 5x + 10

Write an equation for this hanger diagram when a triangle weighs 5 oz.

• 3x + 3 = x + 5

• 3x + 15 = x + 30

• 2x + 1 = 5x

What is the weight of a square if a triangle weighs 4 grams?

• 5 grams

• 6 grams

• 8 grams

• 2 grams

Solve for x:

12x = 144

• x = 2

• x = 132

• x = 4

• x = 12

Solve for c:

3c + 5 = 23

• c = 3

• c = 6

• c = 7

• c = 18

Solve for x:

7(2x - 4) = 42

• x = 9

• x = 2

• x = 8

• x = 5

Solve for w:

7w + 5 = 3w - 15

• w = -2

• w = 5

• w = 2

• w = -5

Solve for x:

7x = 3x + 24

• x = 6
• x = -6

• x = 2

• x = 4

Solve for k:

38 + 7k = 8(k + 4)

• k = 1

• k = 6

• k = 8

• k = -6

If a system of equations has no solution, what does the graph look like?

• one line

• intersecting lines

• parallel lines