The graph below depicts an isocost curve for a construction firm that builds homes using power tools ( ) and workers ( ). The cost curve that is depicted represents an expenditure by the firm of $300. The curve also reflects the following information: the rental rate for power tools is $10 per hour, and the hourly wage rate for workers is $30 per hour. Suppose the firm decided to increase spending on these two inputs to $400. What would happen to the isocost curve? To review this concept, see the section Introduction to Firm Costs