Here is a hanger:

Write an equation to represent the hanger.

Write the equation using the "WIRIS editor" button

PSABM4ZG - Practice---Acc7.3 Lesson 8 Reasoning about Solving Equations (Part 2) (6.EE.A.4, 7.EE.B.4.a)

Part A)

Here is a hanger:

Write an equation to represent the hanger.

Write the equation using the "WIRIS editor" button

Type your answer below:

Part B)

Solve the equation by reasoning about the equation or the hanger.

x = _____

Type your answer below as a number (example: 5, 3.1, 4 1/2, or 3/2):

Part C)

Explain your reasoning.

Type your answer below:

Part A)

Explain how each part of the equation 9 = 3(x + 2) is represented in the hanger.

**x**

**copied for free from openupresources.org**

Type your answer below:

Part B)

Explain how each part of the equation 9 = 3(x + 2) is represented in the hanger.

** 9**

Type your answer below:

Part C)

Explain how each part of the equation9 = 3(x + 2) is represented in the hanger.

** 3**

Type your answer below:

Part D)

Explain how each part of the equation9 = 3(x + 2) is represented in the hanger.

** x+2**

Type your answer below:

Part E)

Explain how each part of the equation9 = 3(x + 2) is represented in the hanger.

** 3(x+2)**

Type your answer below:

Part F)

Explain how each part of the equation9 = 3(x + 2) is represented in the hanger.

** the equal sign **

Type your answer below:

Part A)

Andre is solving the equation . He says, "I can subtract from each side to get and then divide by 4 to get ." Kiran says, "I think you made a mistake.

How can Kiran know for sure that Andre’s solution is incorrect?

Type your answer below:

Part B)

Describe Andre’s error and explain how to correct his work.

Type your answer below:

Part A)

Lin has a scale model of a modern train. The model is created at a scale of 1 to 48.

The height of the model train is 102 millimeters. What is the actual height of the train in meters?

Do not include units (meters) in your answer.

Type your answer below as a number (example: 5, 3.1, 4 1/2, or 3/2):

Part B)

Explain your reasoning.

Type your answer below:

Part C)

On the scale model, the distance between the wheels on the left and the wheels on the right is inches. The state of Wyoming has old railroad tracks that are 4.5 feet apart. Can the modern train travel on those tracks?

Select one:

Part D)

Explain your reasoning.

Type your answer below: