Question 640213
What we know:
$750 to setup machine. $6/hr to run machine. $2/unit materials. Selling at $10/unit. The machine produces 12 clay figures per hour.


How to get from what we know to what we want to know:
This is a very business related problem. First, define your variable and fixed costs. The starting of the machine is a fixed cost. The cost of the materials, m, is variable per unit. The cost to run the machine, l, is variable. The revenue function is only the selling price times the number of units sold. The profit function is the revenue function minus the cost function.

Solution
Cost function: 6l+2m+750 per hour
Revenue function: 10x per unit sold
Profit function: T(x)=10x-(6l+2m+750)
Break-Even function 0=10x-(6l+2m+750)*
*Just a bonus.