Pearson eText Algebra Foundations: Prealgebra, Introductory Algebra & Intermediate Algebra -- Instant Access (Pearson+)
Pearson eText Algebra Foundations: Prealgebra, Introductory Algebra & Intermediate Algebra -- Instant Access (Pearson+)
2nd Edition
ISBN: 9780136881179
Author: Elayn Martin-Gay
Publisher: PEARSON+
bartleby

Concept explainers

Quadratic Equation
When it comes to the concept of polynomial equations, quadratic equations can be said to be a special case. What does solving a quadratic equation mean? We will understand the quadratics and their types once we are familiar with the polynomial equations …
Demand and Supply Function
The concept of demand and supply is important for various factors. One of them is studying and evaluating the condition of an economy within a given period of time. The analysis or evaluation of the demand side factors are important for the suppliers to …
bartleby

Videos

Textbook Question
Book Icon
Chapter 15.2, Problem 70ES

Graph y = x 2 + 2 x + 3. Let x = − 3 , − 2 , − 1 , 0 , 1 to generate ordered pair solutions.

Expert Solution & Answer
Check Mark

Want to see the full answer?

Check out a sample textbook solution
Blurred answer
Previous
Chapter 15.2, Problem 69ES
Next
Chapter 15.2, Problem 71ES
Students have asked these similar questions
Solve the following systems of equations and show all work.y = x2 + 3y = x + 5   Please type out answer
Solve the following system of equations. Show all work and solutions.y = 2x2 + 6x + 1y = −4x2 + 1   Please type out answer
Dalia buys 20 collectible gems per month. Grace sells 10 gems from her collection of 120 each month. When will Dalia have more gems than Grace? Show your work.   Dear Student If You Face any issue let me know i will solve your all doubt.   I will provide solution again in more detail systematic and organized way.   I  would also like my last 3 questions credited to me

Chapter 15 Solutions

Pearson eText Algebra Foundations: Prealgebra, Introductory Algebra & Intermediate Algebra -- Instant Access (Pearson+)

Ch. 15.1 - Use the choices given to fill in each blank. Not...Ch. 15.1 - Prob. 2VRVCCh. 15.1 - Prob. 3VRVCCh. 15.1 - State the slope and the y-intercept of the graph...Ch. 15.1 - Prob. 5VRVCCh. 15.1 - Prob. 6VRVCCh. 15.1 - Prob. 7VRVCCh. 15.1 - Prob. 8VRVCCh. 15.1 - Prob. 9VRVCCh. 15.1 - Prob. 10VRVC
Ch. 15.1 - Prob. 1ESCh. 15.1 - Prob. 2ESCh. 15.1 - Prob. 3ESCh. 15.1 - Prob. 4ESCh. 15.1 - Prob. 5ESCh. 15.1 - Prob. 6ESCh. 15.1 - Prob. 7ESCh. 15.1 - Objetive A Graph each linear function. See Example...Ch. 15.1 - Prob. 9ESCh. 15.1 - Prob. 10ESCh. 15.1 - Prob. 11ESCh. 15.1 - Prob. 12ESCh. 15.1 - Prob. 13ESCh. 15.1 - Prob. 14ESCh. 15.1 - Prob. 15ESCh. 15.1 - Prob. 16ESCh. 15.1 - Prob. 17ESCh. 15.1 - Prob. 18ESCh. 15.1 - Prob. 19ESCh. 15.1 - Prob. 20ESCh. 15.1 - Prob. 21ESCh. 15.1 - Prob. 22ESCh. 15.1 - Prob. 23ESCh. 15.1 - Prob. 24ESCh. 15.1 - Prob. 25ESCh. 15.1 - Prob. 26ESCh. 15.1 - Prob. 27ESCh. 15.1 - Prob. 28ESCh. 15.1 - Prob. 29ESCh. 15.1 - Prob. 30ESCh. 15.1 - Prob. 31ESCh. 15.1 - Prob. 32ESCh. 15.1 - Find an equation of the line passing through the...Ch. 15.1 - Prob. 34ESCh. 15.1 - Prob. 35ESCh. 15.1 - Prob. 36ESCh. 15.1 - Prob. 37ESCh. 15.1 - Prob. 38ESCh. 15.1 - Prob. 39ESCh. 15.1 - Prob. 40ESCh. 15.1 - Prob. 41ESCh. 15.1 - Prob. 42ESCh. 15.1 - Prob. 43ESCh. 15.1 - Prob. 44ESCh. 15.1 - Prob. 45ESCh. 15.1 - Prob. 46ESCh. 15.1 - Prob. 47ESCh. 15.1 - Prob. 48ESCh. 15.1 - Prob. 49ESCh. 15.1 - Prob. 50ESCh. 15.1 - Prob. 51ESCh. 15.1 - Prob. 52ESCh. 15.1 - Prob. 53ESCh. 15.1 - Objective B C Mixed Practice Find an equation of...Ch. 15.1 - Prob. 55ESCh. 15.1 - Prob. 56ESCh. 15.1 - Prob. 57ESCh. 15.1 - Prob. 58ESCh. 15.1 - Prob. 59ESCh. 15.1 - Prob. 60ESCh. 15.1 - Prob. 61ESCh. 15.1 - Prob. 62ESCh. 15.1 - Prob. 63ESCh. 15.1 - Prob. 64ESCh. 15.1 - Prob. 65ESCh. 15.1 - Prob. 66ESCh. 15.1 - Prob. 67ESCh. 15.1 - Prob. 68ESCh. 15.1 - Prob. 69ESCh. 15.1 - Prob. 70ESCh. 15.1 - Prob. 71ESCh. 15.1 - Prob. 72ESCh. 15.1 - Prob. 73ESCh. 15.1 - Prob. 74ESCh. 15.1 - Prob. 75ESCh. 15.1 - Prob. 76ESCh. 15.1 - Prob. 77ESCh. 15.1 - Prob. 78ESCh. 15.1 - Prob. 79ESCh. 15.1 - Prob. 80ESCh. 15.1 - Prob. 81ESCh. 15.1 - Prob. 82ESCh. 15.1 - Prob. 83ESCh. 15.1 - Prob. 84ESCh. 15.1 - Prob. 85ESCh. 15.1 - Prob. 86ESCh. 15.1 - Prob. 87ESCh. 15.1 - Prob. 88ESCh. 15.1 - Prob. 89ESCh. 15.1 - Prob. 90ESCh. 15.1 - Find an equation of the perpendicular bisector of...Ch. 15.1 - Prob. 92ESCh. 15.1 - Solve. 93. Describe how to check to see if the...Ch. 15.2 - Prob. 1VRVCCh. 15.2 - Prob. 2VRVCCh. 15.2 - Prob. 3VRVCCh. 15.2 - Prob. 4VRVCCh. 15.2 - Prob. 1ESCh. 15.2 - Prob. 2ESCh. 15.2 - Prob. 3ESCh. 15.2 - Prob. 4ESCh. 15.2 - Prob. 5ESCh. 15.2 - Prob. 6ESCh. 15.2 - Prob. 7ESCh. 15.2 - Prob. 8ESCh. 15.2 - Prob. 9ESCh. 15.2 - Prob. 10ESCh. 15.2 - Prob. 11ESCh. 15.2 - Prob. 12ESCh. 15.2 - Prob. 13ESCh. 15.2 - Prob. 14ESCh. 15.2 - Prob. 15ESCh. 15.2 - Prob. 16ESCh. 15.2 - Prob. 17ESCh. 15.2 - Prob. 18ESCh. 15.2 - Prob. 19ESCh. 15.2 - Prob. 20ESCh. 15.2 - Prob. 21ESCh. 15.2 - Prob. 22ESCh. 15.2 - Prob. 23ESCh. 15.2 - Prob. 24ESCh. 15.2 - Prob. 25ESCh. 15.2 - Prob. 26ESCh. 15.2 - Prob. 27ESCh. 15.2 - Prob. 28ESCh. 15.2 - Prob. 29ESCh. 15.2 - Prob. 30ESCh. 15.2 - Prob. 31ESCh. 15.2 - Prob. 32ESCh. 15.2 - Prob. 33ESCh. 15.2 - Prob. 34ESCh. 15.2 - Prob. 35ESCh. 15.2 - Prob. 36ESCh. 15.2 - Prob. 37ESCh. 15.2 - Prob. 38ESCh. 15.2 - Prob. 39ESCh. 15.2 - Prob. 40ESCh. 15.2 - Prob. 41ESCh. 15.2 - Prob. 42ESCh. 15.2 - Prob. 43ESCh. 15.2 - Prob. 44ESCh. 15.2 - Prob. 45ESCh. 15.2 - Prob. 46ESCh. 15.2 - Prob. 47ESCh. 15.2 - Prob. 48ESCh. 15.2 - Prob. 49ESCh. 15.2 - Prob. 50ESCh. 15.2 - Forensic scientists use the following functions to...Ch. 15.2 - Prob. 52ESCh. 15.2 - Prob. 53ESCh. 15.2 - Prob. 54ESCh. 15.2 - Prob. 55ESCh. 15.2 - Prob. 56ESCh. 15.2 - Prob. 57ESCh. 15.2 - Prob. 58ESCh. 15.2 - Prob. 59ESCh. 15.2 - Prob. 60ESCh. 15.2 - Prob. 61ESCh. 15.2 - Prob. 62ESCh. 15.2 - Prob. 63ESCh. 15.2 - Prob. 64ESCh. 15.2 - Prob. 65ESCh. 15.2 - Prob. 66ESCh. 15.2 - Prob. 67ESCh. 15.2 - Prob. 68ESCh. 15.2 - Graph y=x24x+7. Let x=0,1,2,3,4 to generate...Ch. 15.2 - Graph y=x2+2x+3. Let x=3,2,1,0,1 to generate...Ch. 15.2 - Prob. 71ESCh. 15.3 - Prob. 1VRVCCh. 15.3 - Prob. 2VRVCCh. 15.3 - Prob. 3VRVCCh. 15.3 - Prob. 4VRVCCh. 15.3 - Prob. 1ESCh. 15.3 - Prob. 2ESCh. 15.3 - Prob. 3ESCh. 15.3 - Prob. 4ESCh. 15.3 - Prob. 5ESCh. 15.3 - Prob. 6ESCh. 15.3 - Prob. 7ESCh. 15.3 - Prob. 8ESCh. 15.3 - Prob. 9ESCh. 15.3 - Prob. 10ESCh. 15.3 - Prob. 11ESCh. 15.3 - Prob. 12ESCh. 15.3 - Prob. 13ESCh. 15.3 - Prob. 14ESCh. 15.3 - Prob. 15ESCh. 15.3 - Prob. 16ESCh. 15.3 - Prob. 17ESCh. 15.3 - Prob. 18ESCh. 15.3 - Prob. 19ESCh. 15.3 - Prob. 20ESCh. 15.3 - Prob. 21ESCh. 15.3 - Prob. 22ESCh. 15.3 - Prob. 23ESCh. 15.3 - Prob. 24ESCh. 15.3 - Prob. 25ESCh. 15.3 - Prob. 26ESCh. 15.3 - Prob. 27ESCh. 15.3 - Prob. 28ESCh. 15.3 - Prob. 29ESCh. 15.3 - Prob. 30ESCh. 15.3 - Prob. 31ESCh. 15.3 - Prob. 32ESCh. 15.3 - Prob. 33ESCh. 15.3 - Prob. 34ESCh. 15.3 - Prob. 35ESCh. 15.3 - Prob. 36ESCh. 15.3 - Prob. 37ESCh. 15.3 - Prob. 38ESCh. 15.3 - Prob. 39ESCh. 15.3 - Prob. 40ESCh. 15.3 - Prob. 41ESCh. 15.3 - Prob. 42ESCh. 15.3 - Prob. 43ESCh. 15.3 - Prob. 44ESCh. 15.3 - Prob. 45ESCh. 15.3 - Prob. 46ESCh. 15.3 - Prob. 47ESCh. 15.3 - Prob. 48ESCh. 15.3 - Prob. 49ESCh. 15.3 - Prob. 50ESCh. 15.3 - Prob. 51ESCh. 15.3 - Prob. 52ESCh. 15.3 - Prob. 53ESCh. 15.3 - Prob. 54ESCh. 15.3 - Prob. 55ESCh. 15.3 - Prob. 56ESCh. 15.3 - Prob. 57ESCh. 15.3 - Prob. 58ESCh. 15.3 - Prob. 59ESCh. 15.3 - Prob. 60ESCh. 15.3 - Prob. 61ESCh. 15.3 - Prob. 62ESCh. 15.3 - Prob. 63ESCh. 15.3 - Prob. 64ESCh. 15.3 - Prob. 65ESCh. 15.3 - Prob. 66ESCh. 15.3 - Prob. 67ESCh. 15.3 - Prob. 68ESCh. 15.3 - Prob. 69ESCh. 15.3 - Prob. 70ESCh. 15.4 - Prob. 1VRVCCh. 15.4 - Prob. 2VRVCCh. 15.4 - Prob. 3VRVCCh. 15.4 - Prob. 4VRVCCh. 15.4 - Prob. 5VRVCCh. 15.4 - Prob. 6VRVCCh. 15.4 - Prob. 7VRVCCh. 15.4 - Prob. 8VRVCCh. 15.4 - Prob. 1ESCh. 15.4 - Prob. 2ESCh. 15.4 - Prob. 3ESCh. 15.4 - Prob. 4ESCh. 15.4 - Prob. 5ESCh. 15.4 - Prob. 6ESCh. 15.4 - Prob. 7ESCh. 15.4 - Prob. 8ESCh. 15.4 - Prob. 9ESCh. 15.4 - Prob. 10ESCh. 15.4 - Solve. See Example 2. 11. The amount W of water...Ch. 15.4 - Prob. 12ESCh. 15.4 - Prob. 13ESCh. 15.4 - Prob. 14ESCh. 15.4 - Prob. 15ESCh. 15.4 - Prob. 16ESCh. 15.4 - Prob. 17ESCh. 15.4 - Prob. 18ESCh. 15.4 - Prob. 19ESCh. 15.4 - Prob. 20ESCh. 15.4 - Prob. 21ESCh. 15.4 - Prob. 22ESCh. 15.4 - Prob. 23ESCh. 15.4 - Prob. 24ESCh. 15.4 - Prob. 25ESCh. 15.4 - Prob. 26ESCh. 15.4 - Prob. 27ESCh. 15.4 - Prob. 28ESCh. 15.4 - Prob. 29ESCh. 15.4 - Prob. 30ESCh. 15.4 - Prob. 31ESCh. 15.4 - Prob. 32ESCh. 15.4 - Prob. 33ESCh. 15.4 - Prob. 34ESCh. 15.4 - Prob. 35ESCh. 15.4 - Prob. 36ESCh. 15.4 - Prob. 37ESCh. 15.4 - Prob. 38ESCh. 15.4 - Objective D Solve. See Example 7. 39. The maximum...Ch. 15.4 - Objective D Solve. See Example 7. 40. The number...Ch. 15.4 - Prob. 41ESCh. 15.4 - Prob. 42ESCh. 15.4 - Prob. 43ESCh. 15.4 - Prob. 44ESCh. 15.4 - Prob. 45ESCh. 15.4 - Prob. 46ESCh. 15.4 - Prob. 47ESCh. 15.4 - Prob. 48ESCh. 15.4 - Prob. 49ESCh. 15.4 - Prob. 50ESCh. 15.4 - Prob. 51ESCh. 15.4 - Prob. 52ESCh. 15.4 - Prob. 53ESCh. 15.4 - Prob. 54ESCh. 15.4 - Prob. 55ESCh. 15.4 - Prob. 56ESCh. 15.4 - Prob. 57ESCh. 15.4 - Prob. 58ESCh. 15.4 - Prob. 59ESCh. 15.4 - Prob. 60ESCh. 15.4 - Prob. 61ESCh. 15.4 - Prob. 62ESCh. 15.4 - Prob. 63ESCh. 15.4 - Prob. 64ESCh. 15.4 - Prob. 65ESCh. 15.4 - Prob. 66ESCh. 15.4 - Prob. 67ESCh. 15.4 - Prob. 68ESCh. 15.4 - Prob. 69ESCh. 15.4 - Prob. 70ESCh. 15.4 - Prob. 71ESCh. 15.4 - Prob. 72ESCh. 15.4 - Prob. 73ESCh. 15.4 - Prob. 74ESCh. 15.4 - Prob. 75ESCh. 15.4 - Prob. 76ESCh. 15.4 - Prob. 77ESCh. 15.4 - Prob. 78ESCh. 15 - Prob. 1IRCh. 15 - Prob. 2IRCh. 15 - Prob. 3IRCh. 15 - Prob. 4IRCh. 15 - Prob. 5IRCh. 15 - Prob. 6IRCh. 15 - Prob. 7IRCh. 15 - Prob. 8IRCh. 15 - Prob. 9IRCh. 15 - Prob. 10IRCh. 15 - Prob. 11IRCh. 15 - Prob. 12IRCh. 15 - Prob. 13IRCh. 15 - Prob. 14IRCh. 15 - Prob. 15IRCh. 15 - Prob. 16IRCh. 15 - Prob. 17IRCh. 15 - Prob. 18IRCh. 15 - Prob. 19IRCh. 15 - Prob. 20IRCh. 15 - Prob. 21IRCh. 15 - Prob. 22IRCh. 15 - Prob. 23IRCh. 15 - Prob. 24IRCh. 15 - Prob. 25IRCh. 15 - Prob. 26IRCh. 15 - Prob. 1VCCh. 15 - Prob. 2VCCh. 15 - Prob. 3VCCh. 15 - Prob. 4VCCh. 15 - Prob. 5VCCh. 15 - Prob. 6VCCh. 15 - Prob. 7VCCh. 15 - Prob. 8VCCh. 15 - Prob. 9VCCh. 15 - Prob. 1RCh. 15 - Prob. 2RCh. 15 - Prob. 3RCh. 15 - Prob. 4RCh. 15 - Prob. 5RCh. 15 - Prob. 6RCh. 15 - Prob. 7RCh. 15 - Prob. 8RCh. 15 - Prob. 9RCh. 15 - Prob. 10RCh. 15 - Prob. 11RCh. 15 - Prob. 12RCh. 15 - Prob. 13RCh. 15 - Prob. 14RCh. 15 - Prob. 15RCh. 15 - Prob. 16RCh. 15 - Prob. 17RCh. 15 - Prob. 18RCh. 15 - Prob. 19RCh. 15 - Prob. 20RCh. 15 - Prob. 21RCh. 15 - Prob. 22RCh. 15 - Prob. 23RCh. 15 - Prob. 24RCh. 15 - Prob. 25RCh. 15 - Prob. 26RCh. 15 - Prob. 27RCh. 15 - Prob. 28RCh. 15 - Prob. 29RCh. 15 - Prob. 30RCh. 15 - Prob. 31RCh. 15 - Prob. 32RCh. 15 - Prob. 33RCh. 15 - Prob. 34RCh. 15 - Prob. 35RCh. 15 - Prob. 36RCh. 15 - Prob. 37RCh. 15 - Prob. 38RCh. 15 - Prob. 39RCh. 15 - Prob. 40RCh. 15 - Prob. 41RCh. 15 - Prob. 42RCh. 15 - Prob. 43RCh. 15 - Prob. 44RCh. 15 - Prob. 45RCh. 15 - Prob. 46RCh. 15 - Prob. 47RCh. 15 - Prob. 48RCh. 15 - Prob. 49RCh. 15 - Prob. 50RCh. 15 - Prob. 51RCh. 15 - Prob. 52RCh. 15 - Prob. 53RCh. 15 - Prob. 54RCh. 15 - Prob. 55RCh. 15 - Prob. 56RCh. 15 - Prob. 57RCh. 15 - Prob. 58RCh. 15 - Prob. 59RCh. 15 - Prob. 60RCh. 15 - Prob. 1GRTCh. 15 - Prob. 2GRTCh. 15 - Prob. 3GRTCh. 15 - Prob. 4GRTCh. 15 - Prob. 5GRTCh. 15 - Prob. 6GRTCh. 15 - Prob. 7GRTCh. 15 - Prob. 8GRTCh. 15 - Prob. 9GRTCh. 15 - Prob. 10GRTCh. 15 - Prob. 11GRTCh. 15 - Prob. 12GRTCh. 15 - Prob. 13GRTCh. 15 - Prob. 14GRTCh. 15 - Prob. 15GRTCh. 15 - Prob. 16GRTCh. 15 - Prob. 17GRTCh. 15 - Prob. 1TCh. 15 - Prob. 2TCh. 15 - Prob. 3TCh. 15 - Prob. 4TCh. 15 - Prob. 5TCh. 15 - Prob. 6TCh. 15 - Prob. 7TCh. 15 - Prob. 8TCh. 15 - Prob. 9TCh. 15 - Prob. 10TCh. 15 - Prob. 11TCh. 15 - Prob. 12TCh. 15 - Prob. 13TCh. 15 - Prob. 14TCh. 15 - Prob. 15TCh. 15 - Prob. 16TCh. 15 - Prob. 17TCh. 15 - Prob. 18TCh. 15 - Prob. 19TCh. 15 - Prob. 20TCh. 15 - Prob. 21TCh. 15 - Prob. 22TCh. 15 - Prob. 23TCh. 15 - Prob. 24TCh. 15 - Prob. 25TCh. 15 - Prob. 1CRCh. 15 - Prob. 2CRCh. 15 - Prob. 3CRCh. 15 - Prob. 4CRCh. 15 - Prob. 5CRCh. 15 - Prob. 6CRCh. 15 - Prob. 7CRCh. 15 - Prob. 8CRCh. 15 - Prob. 9CRCh. 15 - Prob. 10CRCh. 15 - Prob. 11CRCh. 15 - Prob. 12CRCh. 15 - Prob. 13CRCh. 15 - Prob. 14CRCh. 15 - Prob. 15CRCh. 15 - Prob. 16CRCh. 15 - Prob. 17CRCh. 15 - Prob. 18CRCh. 15 - Prob. 19CRCh. 15 - Prob. 20CRCh. 15 - Prob. 21CRCh. 15 - Prob. 22CRCh. 15 - Prob. 23CRCh. 15 - Prob. 24CRCh. 15 - Prob. 25CRCh. 15 - Prob. 26CRCh. 15 - Prob. 27CRCh. 15 - Prob. 28CRCh. 15 - Prob. 29CRCh. 15 - Prob. 30CRCh. 15 - Prob. 31CRCh. 15 - Prob. 32CRCh. 15 - Prob. 33CRCh. 15 - Prob. 34CRCh. 15 - Prob. 35CRCh. 15 - Prob. 36CRCh. 15 - Prob. 37CRCh. 15 - Prob. 38CRCh. 15 - Prob. 39CRCh. 15 - Prob. 40CRCh. 15 - Prob. 41CRCh. 15 - Prob. 42CR

Additional Math Textbook Solutions

Find more solutions based on key concepts
The largest polynomial that divides evenly into a list of polynomials is called the _______.

Elementary & Intermediate Algebra

Find all solutions of each equation in the interval .

Precalculus: A Unit Circle Approach (3rd Edition)

Let F be a continuous distribution function. If U is uniformly distributed on (0,1), find the distribution func...

A First Course in Probability (10th Edition)

Provide an example of a qualitative variable and an example of a quantitative variable.

Elementary Statistics ( 3rd International Edition ) Isbn:9781260092561

23. A plant nursery sells two sizes of oak trees to landscapers. Large trees cost the nursery $120 from the gro...

College Algebra (Collegiate Math)

For Exercises 13–18, write the negation of the statement. 13. The cell phone is out of juice.

Math in Our World

Knowledge Booster
Background pattern image
Algebra
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, algebra and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Intermediate Algebra
Algebra
ISBN:9780998625720
Author:Lynn Marecek
Publisher:OpenStax College
Text book image
Intermediate Algebra
Algebra
ISBN:9781285195728
Author:Jerome E. Kaufmann, Karen L. Schwitters
Publisher:Cengage Learning
Text book image
Elementary Algebra
Algebra
ISBN:9780998625713
Author:Lynn Marecek, MaryAnne Anthony-Smith
Publisher:OpenStax - Rice University
Text book image
PREALGEBRA
Algebra
ISBN:9781938168994
Author:OpenStax
Publisher:OpenStax
Text book image
College Algebra (MindTap Course List)
Algebra
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:Cengage Learning
Text book image
Holt Mcdougal Larson Pre-algebra: Student Edition...
Algebra
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
SEE MORE TEXTBOOKS
Introduction to Algebra: Using Variables; Author: Professor Dave Explains;https://www.youtube.com/watch?v=WZdZhuUSmpM;License: Standard YouTube License, CC-BY