Consequently, When Love Takes Over was shelved until Guetta rediscovered the song when compiling his fourth studio album, One Love. The finished song with Rowland's vocals and Guetta's production was premiered in March 2009 at the Ultra Music Festival in Miami.
A related concept is marginal cost. Average fixed cost is the total fixed cost per unit of output incurred when a firm engages in short-run production. It can be found in two ways. Because average fixed cost is total fixed cost per unit of output, it can be found by dividing total fixed cost by the quantity of output.
(Average fixed cost + Average variable cost) x Number of units = Total cost. For example, a company is incurring $10,000 of fixed costs to produce 1,000 units (for an average fixed cost per unit of $10), and its variable cost per unit is $3.