1. Lesson 8

1.11. Connect

Mathematics 20-1 Module 4

Module 4: Quadratic Equations and Inequalities

 

Connect

 

Lesson 8 Assignment

 


assessment

Open your copy of the Lesson 8 Assignment, which you saved in your course folder at the start of this lesson. Complete the assignment.

 

course folder Save your work in your course folder.

 

Project Connection

 


assessment

This is a play button that opens Module 4 Project: Imagineering.

© wong yu liang/29976438/Fotolia

Go to Module 4 Project: Imagineering. Complete Step 6: Expansion.

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Going Beyond

 

Part A

 

In this lesson you learned several strategies for solving quadratic inequalities. You can extend these strategies to the solution of polynomial inequalities.
           

The following graph represents the cubic function f(x) = 0.08(x + 5)(x + 2)(x – 7).

 

This shows the graph of a polynomial function that starts in quadrant 3, ends in quadrant 1, and crosses the x-axis three times.

 

Apply at least two of the strategies you used in this lesson to solve the inequality 0.08(x + 5)(x + 2)(x − 7) ≤ 0.

 

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Part B: Calculate Your Carbon Footprint

 

You can determine your impact on the environment by calculating your own carbon footprint. Search the Internet for “carbon footprint calculator.” Find a calculator that allows you to input information about your lifestyle and environmental practices. You can make a plan to improve your score by following environmentally friendly practices.

 

course folder Save your work in your course folder.