8.4.1: Preparation 2.3-W Renewable Energy

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(1) Calculate the following values.

(a) What percent of 20 is 2?

(b) 28 is what percent of 80?

(2) A school principal of 810 students needs to determine what percent of students passed and did not pass a statewide examination. Round to the nearest percent.

(a) If 550 students passed the exam, what percent passed the test?

(b) What percent did not pass the test?

(3) A laptop computer that you want to purchase was originally priced at $1,225. You will receive a 20% student discount, and the sales tax rate is 8%. How much money will you pay for the laptop?

In Collaboration 2.3C, we will look at an important issue in environmental science: energy use and alternative energy sources. The video, “The Future of Energy?”, from Cambridge University, provides a brief overview of the dilemma we are facing with energy and alternative sources of energy. Watching this will help you understand some of the concepts in the problem situation. It will introduce different sources of energy, their benefits and drawbacks, and how energy is produced.

Please watch this video here before Collaboration 2.3C: https://carnegiemathpathways.org/go/pbsenergy

After Preparation 2.3 (survey)

You should be able to do the following things for the next collaboration. Rate how confident you are on a scale of 1–5 (1 = not confident and 5 = very confident).

Before beginning Collaboration 2.3 you should understand the concepts and demonstrate the skills listed below.

Skill or Concept: I can...	Rating from 1 to 5
find a percent of a number.

Self-Regulated Learning: Reflect

How much time and effort per week is this course taking? Is it what you expected? Is there anything you need to adjust in your weekly schedule to make sure you are successful?

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