Johnny wants to start making and selling surfboards. His costs are the large sum of money that includes his initial investment and the cost of materials for each surfboard. He has already planned how much he is going to sell his surfboards for. Explain how Johnny can set up a system of equations to predict when he will start to make a profit.

Question

anonymous · Answer

I have an idea of how to do this but I don't know how to put it in words or an equation.
Like I know one equation will be the initial investment + cost of materials = total deducation from potential profit(idk how to word that part) I'm not sure if it's right though

anonymous · Answer

Let x be the number of surfboards sold

Cost = investment + (costs  per board) x

Income = (Price) x

Plot cost and income on same graph, vs. x = # boards 

Profit starts when Income>= Costs, x at  "Break-even number" of boards to be sold.

anonymous · Answer

Thank you!