Warm fronts are a type of fishing weather that doesn't have as severe an impact on bass as do cold fronts. They often move in slowly bringing rain (not storms) and cloud cover. Temperatures rise and barometric pressure drops. Bass are often stimulated to feed with the arrival of a warm front.
Theoretical basis [edit]. Contribution margin per unit is the difference between the price of a product and the sum of the variable costs of one unit of that product.heoretical basis [edit]. Contribution margin per unit is the difference between the price of a product and the sum of the variable costs of one unit of that product.
The contribution margin is the amount of profit or loss that is above or below the break-even point on a per unit basis. This formula is usually used to show the amount of profit the company has after the break-even point has been passed. In the BEQ Equation, P-VC is the contribution margin.