Question 174653
A){{{12x+15y<=125}}}
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B)if you buy 2 on sale cd's: 12(2)=24
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{{{24+15y<=125}}}--->{{{15y<=101}}}--->y<=6.733....therefore you could buy 6 regular priced cd's and will end up with $11 change(12(2)+15(6)=114)
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if you buy 4 on sale cd's: 12(4)=48
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{{{48+15y<=125}}}--->{{{15y<=77}}}-->{{{y<=5.13}}}...so you can buy 5 regular cd's under this scenario and end up with 2 dollars change(12(4)+15(5)=123)
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if you buy 8 on sale cd's: 12(10)120
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{{{120+15y<=125}}}--->{{{15y=5}}}--->{{{y<=.33}}}....so you cannot buy any regular cd's under this scenaro and you will end up with $5 change(12(10)+15(0)=120)