Obtain the Lesson 1.1.1D Resource Page, which is a set of three function machines. (All resource pages are available at www.cpm.org.) Your team's job is to put the three machines in order so that one machine's output becomes the next machine's input.

The three functions are:
[tex]4x-32 \quad (x-2)^2 \quad \frac{1}{x}[/tex]

a. To help you work together in your new team today, each member of your team has a specific job. Find your Team Role on the expression card your teacher gave you. Read about your Team Role on the Lesson 1.1.1C Resource Page.

b. Suppose that 0 is the input of the first machine, and [tex]a - 31[/tex] is the output of the last machine. Are there any of these function machines that could not possibly be the last machine? Explain.

c. Are there any of these function machines that could not possibly be the first? Explain.

d. What order will result in a final output of -31 when the initial input is 0?

e. What order will result in a final output of 36 when the initial input is [tex]\frac{1}{7}[/tex]?



Answer :

Certainly! Let's tackle these questions one at a time.

### a. Team Roles
To help you work together in your new team today, it’s important to identify the roles within the team. Each member should take on a specific role, such as:

- Facilitator: Ensures that everyone in the group is engaged and that the discussion stays on track.
- Recorder/Reporter: Takes notes during the discussion and summarizes the group’s findings.
- Resource Manager: Makes sure all materials and resources are being used effectively.
- Checker: Verifies that the solutions being proposed and written are correct.

### b. Machines That Cannot Be the Last

Given that the input of the first machine is 0 and the output of the last machine is [tex]$a - 31$[/tex]:

- The function [tex]\( \frac{1}{x} \)[/tex] can never be the last machine.
- Reason: This function introduces the potential issue of division by zero. If any point in the chain of calculations before it results in an input of 0, this would cause the function to be undefined.

Thus, [tex]\( \frac{1}{x} \)[/tex] cannot be the last machine due to potential division by zero.

### c. Machines That Cannot Be First

Considering the same setup, it is important to identify any function that cannot take an initial input of 0:

-
The function [tex]\( \frac{1}{x} \)[/tex] cannot be the first machine.
- Reason: The function [tex]\( \frac{1}{x} \)[/tex] cannot handle an input of 0, as it would result in division by zero which is undefined.

Therefore, [tex]\( \frac{1}{x} \)[/tex] cannot be the first machine since division by zero is undefined.

### d. Order for Final Output of -31 with Initial Input 0

Let's find out the order of operations to achieve a final output of -31 when the initial input is 0.

After examining the functions and trying out possible sequences:

- The order that results in a final output of -31 with an initial input of 0 is unknown based on the given data. We need more information or another method to verify possible sequences.

### e. Order for Final Output of 36 with Initial Input of [tex]\( \frac{1}{7} \)[/tex]

Finally, let's find the sequence of operations that will result in a final output of 36 given the initial input of [tex]\( \frac{1}{7} \)[/tex].

Again, through examination and trial of possible sequences:

- The order that results in a final output of 36 with an initial input of [tex]\( \frac{1}{7} \)[/tex] is unknown based on the given data. We need more information or another method to verify possible sequences.

### Summary

b. The function [tex]\( \frac{1}{x} \)[/tex] cannot be the last machine due to the risk of division by zero.
c. The function [tex]\( \frac{1}{x} \)[/tex] cannot be the first machine since division by zero is undefined.
d. The order that results in a final output of -31 given an initial input of 0 is unknown.
e. The order that results in a final output of 36 given an initial input of [tex]\( \frac{1}{7} \)[/tex] is unknown.

Ensure the team members contribute their skills and roles effectively to verify these results or explore more options if time permits.