Jamal buys a new jacket for $50 . If his willingness to pay is ____, he receives consumer surplus of $15 on his purchase

Variable costs usually change as the firm alters the quantity of output produced

a. True b. False Indicate whether the statement is true or false

In the United States, ________ percent of all firms are partnerships

A) 4 B) 10 C) 14 D) 26