It is an appellant's burden to demonstrate reversible error on the record before us. Corallo v. Fla. Dep't of Child. & Fam. Servs., 971 So.2d 966, 967 (Fla. 3d DCA 2008).

Nevertheless, it was (and remained) incumbent on Friedman to provide the appellate court with an adequate record upon which the court can determine the merits of any properly-preserved claims of error. See Fla. R. App. P. 9.200(e) (providing that "[t]he burden to ensure that the record is prepared and transmitted in accordance with these rules shall be on the petitioner or appellant.") Applegate v. Barnett Bank of Tallahassee , 377 So.2d 1150 (Fla. 1979) ; Corallo v. Florida Dept. of Children & Family Servs. , 971 So.2d 966 (Fla. 3d DCA 2008) ; Latin Am. Ben. Center, Inc. v. Johstoneaux , 257 So.2d 86 (Fla. 3d DCA 1972). Finally, we hold that the trial court, in its amended final judgment, properly awarded prejudgment interest at the rate of eighteen percent.