Phrase: Four more than the number of weeks in a group of days.
Variable: Let represents the number of weeks in a group of days.
Expressions: .
Therefore, the algebraic expression is .
The algebraic expression is .
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9d9525296c7189f71cd1cbb29d5a4593.png\")
represents the number of weeks in a group of days.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=acc2db63777bcd09526e8ac49a7a9ebe.png\")
..![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
.