The situation is “a bank withdrawal of $100”.
The word withdrawal indicates minus, the symbol is “()”.
The equation represents the current situation is $100.
Locate the integer “100” on the number line.
The graph is,
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c7a8c800d2df7d176b09fff75181eb8f.png\")
)”.$100.100” on the number line.![\"number](\"/userfiles/image/Library/Pre_Algebra/number_line_diagram_a_equal_minus_100.gif\")
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")