You are provided with a simple model of the success of a marketing campaign from clicking an add through making an actual purchase, and need to explain the key metrics for each stage. The model is then applied to compare profit versus cost for two scenarios, where in one of them the cost is higher but also the customer willingness to provide their email (one of the steps is capturing their email). For that case, you need to calculate the click-through rate to break even, and then compare that click-through to the initial (base) scenario
