3, 1165-66 (Wash. Ct. App. 2007) (finding that signatures of the parties were not essential to a finding of mutual assert to enter into a contract): Carvallo v. Wells Fargo Bank, NA 728 F.3d 878, 883 (9th Cir. 2013), as amended on rehg in part (Sept. 23. 2013) (disagreeing with a bank's argument that, ev