Explain Business Law Problems

Please help me with two questions and submit an example.

1. When Jeff's car breaks down, he asks Kwik Tow, Inc., to tow it from its location to Loyal Repair Shop. There is no discussion of a price, and Jeff and Kwik do not sign any documents. After the tow, Kwik sends Jeff a bill. With respect to Jeff's obligation to pay the bill, this is

a. an express contract.

b. an implied-in-fact contract.

c. an implied-in-law contract.

d. no contract.

2. A judge instructs a jury as to the law that applies in a case.