For each of the following, state if there is a mutual assent to form a contract

For each of following, state if there is mutual assent to form a contract: A says to B, "I offer to sell my car for $400." Six A says to B, "I offer $400 to sell my car." B says, "I accept." months pass, and B says, "I accept." 2 A says to B, "I offer $400 to sell my car." B says, 8 On Monday, A says to B, "I offer to sell my car "No way." for $400." B pays A $25 to hold the offer open until Wednesday. On Tuesday, A then says that 3 A says to B, "I offer $400 to sell my car," and before B can answer, A says, "I revoke the offer." he has revoked the offer. A says to B, "I offer $400 to sell my car." B never 4 A says to B, "I offer $400 to sell my car." B says, 9 "| accept. I will buy for $300." answers. A says to B, "I offer $400 to sell my car." C says, 5 A says to B, "I offer $400 to sell my car." B says, 10 "No," but then says, "I will pay $300." "OK." 6 A says to B, "I am thinking about selling my car for $400." B says, "OK."