Please help me with this augmented matrix problem!! Please and thanks.

Question

The members of a cooking club are making cakes, which they will sell at a street fair for $30 apiece. It cost $29 for a booth at the fair, and the ingredients for each cake cost $1. At some point, the club members will sell enough cakes so that their sales cover their expenditures. How many cakes will they have sold? How much will the sales and expenditures be?

Once the members of the club have sold ___ cakes, they will break even, with sales and expenditures of $___.

Answer 1

Expenses: 29 + 1*X where X is the # of cakes

Income: 30x where X is the # of cakes

30x = 29 + 1x

29x = 29

x = 1

All they have to do is sell 1 cake to break even...