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You don't need to graph it, just use subitution.
let B = 3C
so 3C + C = 50
4C = 50
C = 12.5
If C = 12.5 then B = 37.5
C x 1 = 12.5
B x 1.5 = 56.25
The Answer would be $68.75 (assumeing half dozens are alowed)
The Answer would be $68.50 (not alowing half dozens)
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