Question

break even analysis. suppose a certain product sells for a dollars per unit. then the revenue from selling x units of the product is ax dollars if the cost of producting each unit of the product is b dollars and the company has overhead cost of c dollars then the total cost of producing x unit of the product is bx + c dollars. write a programe. ( note revenue is the amount of money received from the sale of the product . the value of a, b and c are called the marginal revenue, marginal cost and fixed cost respectively. the break even point is the value of x for which the revenue equals the total cost. write program that request the marginal revenue. write a program that request the marginal revenue, marginal cost, fixed cost and number of units of the product produced and sold (x) and then displays one of the following three output : profit, loss or break even.

This is what I have so far, but I'm stuck.

If IsNumeric(fixedCost) And IsNumeric(marginalRev) And IsNumeric(marginalCost) And IsNumeric(units) Then
marginalRev = CDbl(txtMargin.Text)
marginalCost = CDbl(txtMarginCost.Text)
fixedCost = CDbl(txtFixedCost.Text)
units = CDbl(txtUnits.Text)
Else
MessageBox.Show("Please enter a number.")
End If
stats = CStr(txtStatus.Text)
stats = marginalRev * marginalCost - (marginalCost * fixedCost)
Select Case stats
Case Is = 0
stats = "Break Even"
Case Is < 0
stats = "Profit"
Case Is > 0
stats = "Loss"
Case Else
stats = "MISTAKE"

End Select
txtStatus.Text = stats
End Sub