Math 1 Changes for 2009-2010

03#02 the unknown number is now called k.
21#07 changed "first" to "previous".
34#03 has been moved higher on the page, and its text lengthened.
34#10 is a new sequel to 34#3.
36#05 reworded.
39#11 interchanged with 41#8.
41#08 interchanged with 39#11.
42#04 reworded.
43#01 moved from the bottom of page 42.
52#06 removed "three" from part a.
55#02 inserted "system" into part b.
55#05 specified which axis is which.
56#05 inserted the word "system" into part a.
61#03 part a is rewritten.
62#04 the hammer is now dropped by a worker, not a workman.
70#01 inserted "approximately" into part d.
73#03 now has two parts, and the diagram has been modified.
84#04 now has three parts.