A farmer sells almonds according to the chart below. The more pounds of almonds that are sold, the lower the cost per pound is for the entire order of almonds. Number of Pounds up to 10 more than 10, and up to 20 more than 20, and up to 30 more than 30 Almond Prices Cost (per Pound) $20 $15 $10 $5 The farmer graphs a step function to model the situation, where y represents the cost per pound for an order of x pounds of almonds. Which of the following describes the farmer's graph for the step that includes 20.75 pounds, and what is the total cost of 20.75 pounds of almonds?