Head First Algebra

Errata for Head First Algebra

Submit your own errata for this product.


The errata list is a list of errors and their corrections that were found after the product was released. If the error was corrected in a later version or reprint the date of the correction will be displayed in the column titled "Date Corrected".

The following errata were submitted by our customers and approved as valid errors by the author or editor.

Color Key: Serious Technical Mistake Minor Technical Mistake Language or formatting error Typo Question Note Update



Version Location Description Submitted By Date Submitted Date Corrected
Printed
Page 21
Big Bag o' Games graphic

On page 2 the games system is called KillerX, on page 21 it is called oPod.

Note from the Author or Editor:
change game system name in the graphic to KillerX from oPOD.

jr.larsen  Aug 08, 2009 
Printed
Page 30
KillerX 2.0 graphic

This is really minor, but: The OPOD name is in the item code for the game system. For consistency it should be KILLX-112.

Note from the Author or Editor:
The OPOD name is in the item code for the game system. For consistency it should be KILLX-112. Change it to KILLX - 112

jr.larsen  Aug 08, 2009 
Safari Books Online
56
Exercise Solution - towards the bottom of the page

The text states "Isolate the variable by dividing both sides by 150" but it shows, correctly I might add, that both sides are divided by 230. So, the term actually reads 15/230 = P, not 15/150.

Note from the Author or Editor:
change the annotation at the bottom of the page to "Isolate the variable by dividing by 230"

Anonymous  Mar 29, 2010 
Printed
Page 70
First problem - solution to 6 + 5x - 8y + 3y

The problem simplifies to: 2 + 3x -8y + 3y; the final answer is given as 3 + 3x -5y. It should be : 2 + 3x -5y

Tracey Pilone
Tracey Pilone
O'Reilly AuthorO'Reilly Blogger 
Jan 22, 2009 
Printed
Page 70
Solution to the final problem starting with (9 times3)/x times xy

the final question simplifies to 25y-16 +.5 -x. The final answer should be 25y-15.5-x.

Tracey Pilone
Tracey Pilone
O'Reilly AuthorO'Reilly Blogger 
Jan 22, 2009 
Printed
Page 134
6. down

Question Down 6. Exponent ?? I go for Base * Base * Base :-> Answer 139 Exponent ??

Note from the Author or Editor:
Answer to 139 needs to be changed to "base"

Dimitri  Sep 08, 2009 
Printed
Page 152
Middle of graph.

While graphing the line corresponding to $245, the rise is above the graph line for $250 instead of beneath it.

Note from the Author or Editor:
Adjust the annotation for the line near $250 to just below instead of just above.

Deborah Barnard  Jan 18, 2010 
Printed
Page 187
Bottom right hand page

In the sidebar it states that "...the RISE of the slope is that number, and the RUN of that slope is 1" Rise and run are backwards.

Tracey Pilone
Tracey Pilone
O'Reilly AuthorO'Reilly Blogger 
Feb 05, 2009 
Printed
Page 230
Bottom graph

I think that the shading on the bottom inequality graph on this page is on the wrong side.

Note from the Author or Editor:
The shading on the bottom graph should be above the graph, not below.

Anonymous  May 03, 2010 
Printed
Page 250
the Graph

c + 0.4p = 2.6 (0,2.6) (6.5,0) Then (4,1) is better in focus Grtzzz Dimitri

Note from the Author or Editor:
Perhaps shift c + 0.4p = 2.6 down slightly so the intersection is more perfectly over (4,1).

Dimitri  Sep 19, 2009 
Printed
Page 269
Problem statement (repeated on the next page)

Also, on pages 269 and 270 the money collected is $31,566 in the question, and $31,568 in the answer. The problem statements should be corrected to reflect the $31,568.

Tracey Pilone
Tracey Pilone
O'Reilly AuthorO'Reilly Blogger 
Feb 05, 2009 
Printed
Page 273
Mystery description

On p. 273 where it says "Kathleen said that she bought twice as many dresses as shoes and got 6 things all together" it will be changed to say something like "there are a total of 6 bags, with 2 bags per dress and 1 bag per pair of shoes." That means that we'll keep the 2d + s =6 and then we still have parallel lines.

Tracey Pilone
Tracey Pilone
O'Reilly AuthorO'Reilly Blogger 
Feb 05, 2009 
Printed
Page 296
Bottom left solution

Missing a after -2. Should read a2 - 2a - 24

Note from the Author or Editor:
Should read (a^2 - 2a -24) the last solution is missing an a after the -2

Anonymous  May 04, 2010 
Printed
Page 303
Bottom left problem

The binomial multiplication problem has a + sign between them (the same problem exists on the solutions page (304).

Note from the Author or Editor:
Remove the "+" sign between the two groups on the bottom left problem.

Pamela Coupar  May 04, 2010 
Printed
Page 312
Bottom right example

A minus sign has been lost in the working, with the error propagated to the following lines. 8x + 24x -16x = 2400 becomes 8x(1 + 3 + 2) = 2400 It should be 8x(1 + 3 - 2) = 2400.

Note from the Author or Editor:
change 8x(1 + 3 + 2) = 2400 to 8x(1 + 3 - 2) = 2400 change 8x(6) to 8x(2) change 48x/48 to 16x/16 change 2400/48 to 2400/16 change x = 50 to x = 150

jr.larsen  Aug 08, 2009 
Printed
Page 312
bottom - left

suspicious variable transformation Grtzzz . . . Dimitri

Note from the Author or Editor:
need to change the equation to have p as the variable, not z. the first line should read p/3 - 5/3 = 5

Dimitri  Sep 21, 2009 
Printed
Page 380
3rd paragraph

values missing a u.

Note from the Author or Editor:
add the "u" back into values in the 3rd paragraph

Anonymous  May 10, 2010 
Printed
Page 394
8th paragraph on left

"Function:..., you can graph me in the much the same way..." Too many the's should read "Function:..., you can graph me in much the same way..."

Note from the Author or Editor:
Delete the "the" before much.

Anonymous  May 12, 2010 
Printed
Page 418
crossword puzzle

Deja Vu Page 373 and 418 Wrong crossword Look at page 420 Grtzzz . . Dimitri

Note from the Author or Editor:
Page 373 is fine. The crossword on p. 418 and 420 are the same one, but the format is different. The answers were generated from a different grid than the question. They need to match! The .cwz files should have been uploaded, but Tracey can change them if needed.

Dimitri  Sep 22, 2009 
Printed
Page 426
third dotted line

-1(-d(m)) = (-7300+9(m)) closing parenthesis -1 Grtzz . . Dimitri

Note from the Author or Editor:
The line in question is missing the last parentheses. It should read -1(-d(m)) = (-7300 + 9(m))-1

Dimitri  Sep 22, 2009 
Printed
Page 472
'Try this' example

The example is set up to use 12.34 + 5.6, but the 'Right way' and 'Wrong way' both show 12.34 + 4.5

Note from the Author or Editor:
change 12.34 + 5.6 to 12.34 + 4.5

jr.larsen  Aug 08, 2009 
Printed
Page 492
Worked examples Bake your fractions

Answer should be 3 16/28 not 3 22/28 for 2 6/7 x 1 1/4 100 divided by 28 is 3 with remainder 16 not 22.

Note from the Author or Editor:
Change the 22 in the solution to 16 for the 2 6/7 x 1 1/4 problem.

Alexander Mackenzie  Feb 17, 2009 
Printed
Page 508
last problem

The answer for 27/4 is given as 8 3/4 but should be 6 3/4.

Note from the Author or Editor:
The answer for 27/4 is given as 8 3/4 but should be 6 3/4.

Esther  Jul 03, 2009 
PDF
Page 518
first solution

The answer for 5^5 is given as

Note from the Author or Editor:
The answer for 5^5 is given as "3215" but should be "3125".

Stefan Zapf  Aug 04, 2009