Answer Key to Appendix+D+Solutions[1]

Answer Key to Appendix+D+Solutions[1] - MAT 117 Algebra 1B...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
MAT 117 Algebra 1B Answer Key for Rational Expressions and Equations—Part 1, Due in Week Four Answers to Appendix D are provided in red. Environmental and wildlife preservation ensures future generations will have resources available and can enjoy the beauty of Earth. On the other hand, some of the damage humans have already done to the environment is expensive and time consuming to eradicate. 1. The cost, in millions of dollars, to remove x % of pollution in a lake modeled by x C 2 200 6000 - = a. What is the cost to remove 75% of the pollutant? 120 50 6000 150 200 6000 75 2 200 6000 = = - = × - = C It will cost $120 million to remove 75% of the pollutant. b. What is the cost to remove 90 % of the pollutant? 300 20 6000 180 200 6000 90 2 200 6000 = = - = × - = C It will cost $300 million to remove 90% of the pollutant. c. What is the cost to remove 99% of the pollutant? 3000 2 6000 198 200 6000 99 2 200 6000 = = - = × - = C It will cost $3,000 million or $3 billion dollars to remove 99% of the pollutant. d.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 08/05/2010 for the course MATH 117 taught by Professor Hamilton during the Spring '10 term at Huntington.

Page1 / 3

Answer Key to Appendix+D+Solutions[1] - MAT 117 Algebra 1B...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online