Assume a customer has a two-attribute value function for cars: cost and quality. Cost can range from $5,000 to $10,000 and quality can range from 0 to 10 (a higher score is better). Over these ranges, these two objectives are equally important to the customer. The value functions are both linear. Which car would this customer prefer: car A for $7,000 and quality level 5, or car B for $8,000 and quality level 6? Draw the value functions for the two attributes.