![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
The height of tennis ball can be modeled by the equation is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=10c3067d0ba25cf51156e98e3da5fd30.png\")
, where t represents the time in seconds and h is height in feet.
Factor by using the GCF.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=03134822e6311e07af1bb9242e7f529e.png\")
.
Ignoring the height of the tennis player is zero, so ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=86d1bdbc1f11890966887f2f0ac4b3eb.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step2.JPG\")
Apply zero product property: ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b3f3ba110f36759e48162b45b593fc7e.png\")
.
So, ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4d09a2a00335c4367ed8906e402be0c1.png\")
The first equation, ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6490caa859f694615dcb797e2a7886e2.png\")
.
Solve the second equation, ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=823db96925b4c394118eec0598085fcc.png\")
.
Add t from each side.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f69b2d7a2065b9de32b94855ef612105.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6fe0a4735b9dfcbe523d3fe577a693bb.png\")
So, the tennis ball hits the ground after 5 seconds.
\![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
So, the tennis ball hits the ground after 5 seconds.