![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
(a)
\Monthly sales for Fiona’s Fine Ice Cream shop can be modeled by ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5de56e839f6c40782d3fa9f5cafd86ea.png\")
.
Find the sales for January, March, July, and October.
\January corresponds to ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=904db271af90498eeffd872b24e2b85a.png\")
.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=03bdea3b9b30c725f232393298684c2d.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5f860ed6092f881622f267a159d600dc.png\")
.
Fiona’s Fine Ice Cream shop sales for january is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ecf1eec8858535bf8d1349186efb1718.png\")
.
\
March corresponds to ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=41712be6428269f69b083f9b9d22acd3.png\")
.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4d888c92844eab51074e07285a4a7905.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=403dcfcaa9d2d12b9e8454a4a4ba25f4.png\")
.
Fiona’s Fine Ice Cream shop sales for march is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a03ac7bb81a53fd968755de77262e24b.png\")
.
\
July corresponds to ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=87127bc0e1cb9ae227a64a9c3682a5f0.png\")
.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f0c0ad2d3b4c88186a64e6f9fc98f29d.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e1fdf7d4859f68bad7acef159e4dfa83.png\")
.
Fiona’s Fine Ice Cream shop sales for july is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4baa204a12ff47158a5c58d8d6b21728.png\")
.
\
October corresponds to ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=47bd8bd5c3f6dd65d75e2ec579afd1bd.png\")
.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=231979a75e9c2063e933bef75692176f.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=1fa0f6c3bbb7e610768fdd24dd36c784.png\")
.
Fiona’s Fine Ice Cream shop sales for october is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=019358bb31c0dde81d33e547e91b979b.png\")
.
![\"\"](\"/userfiles/image/steps_images/step2.JPG\")
(b)
\The sales of ice cream depends on season, ice cream sales in the summer is more and in other season sales of ice cream is less, so ice cream shop’s sales can be represented by a trigonometric function.
\![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
(a)
\Fiona’s Fine Ice Cream shop sales for january is .
Fiona’s Fine Ice Cream shop sales for march is .
Fiona’s Fine Ice Cream shop sales for july is .
Fiona’s Fine Ice Cream shop sales for october is .
(b)
\The sales of ice cream depends on season, ice cream sales in the summer is more and in other season sales of ice cream is less, so ice cream shop’s sales can be represented by a trigonometric function.