Contacts - Exercise 1. "I will sell you my coin collection for a price to be agreed upon later." Is this a valid offer?

2. "I accept your offer on the condition that I will buy 100 units instead of the 105 you have offered" Is this valid acceptance?

3. Calvin is a young entrepreneur. At 15 years of age, he has already started a successful business. He has entered into a contract to purchase materials for his product. Will this be a valid contract?

4. "I promise to give you $3k if you work for me for 1 month." Is working for 1 month valid consideration?

5. "I will give you my bike if you let me walk on Yonge St. whenever I want." Is valid consideration being given?

6. "I will sell you my shares in X Co. for $50." The value of the shares is $2,000. Is this a valid offer?

7. Mr. Gupta, a successful businessman who doesn't speak or read English well, signed a real estate contract. Is there valid intent to enter into a contract?

8. "I will pay you $5k if you kidnap Mr. Smith." Is this a valid contract?