Finite Math

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I keep trying to set up this problem to solve it using the Simplex Method, but I can't seem to get the tableau set up correctly. If anyone could help, I would appreciate it:

A baker has 150 units of flour, 90 of sugar, and 150 of raisins. A loaf of raisin bread requires 1 unit of flour, 1 of sugar and 2 of raisins, while a raisin cake needs 5, 2 and 1 units respectively.

If raisin bread sells for $1.75 a loaf and raisin cake for $4.00 each, how many of each should be baked so that gross income is maximized?

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