![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
Let x be the earned amount in dollars per one hour.
\The earned amount in 2.5 hours is 2.5x dollars.
\The amount spend on supplies is 15 dollars.
\The amount of goal is 100 dollars.
\Therefore, the above situation represent the equation is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2ec766a01a9be828bb17f9a73c73945d.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step2.JPG\")
Solve the equation ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2ec766a01a9be828bb17f9a73c73945d.png\")
for x.
Add 15 to each side.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e04f49c3bbd0ee9918e9aa7161ad9cc2.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e29c2b85ba6ba86705eff274f055d342.png\")
Divide each side by 2.5.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=fc7289f7cf6c0d90b9a9f6aa82f8bab7.png\")
Cancel common terms.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6748aa67796bd429b1faeccabd154723.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The amount earned per one hour is 46 dollars.