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(1.83x) - 75.00

where x = # of cupcakes sold

So if 1 cupcake was sold...

1.83 x 1 = 1.83 -75.00 = -73.17

And if 5 cupcakes were sold...
1.83 x 5 = 9.15 -75.00 = -65.85

In order to earn a profit they’d have to sell 41 cupcakes...
1.83 x 41 = 75.03 - 75.00 = 0.03 (the first non negative answer to this equation would only happen after 41 cupcakes are sold)

The volume is 56.8 triangular the