provision contained in the Keys’ contract. If each of the six residential roofing contracts used sequentially by LSRC since 2010 was signed by at least 500 customers, 500 customers per six eon- tracts equals a pool of at least 3,000 customers. The certification order defines the class as limited to Texas residents who from June 2003 to the present signed one of the six agreements with LSRC containing the Acceptance and Agreement provision, constituting in excess of 3,000 putative class members. After examining the numerosity factors set forth above—¡joinder of all 3,000 plus class members is not practicable in view of the size of the class, judicial economy is served by a class action, the nature of the declaratory-judgment and the DTPA violation-of-chapter-541-of 2 (5th Cir. 1981) (<HOLDING>), cert. denied, 456 U.S. 960, 102 S.Ct. 2035,
recognizing that in determining numerosity the proper focus is not on numbers alone but on whether joinder of all members is practicable in view of the numerosity of the class and all other relevant factors holding that a potential class of 256 members did not satisfy numerosity holding that bare assertions of numerosity are insufficient and the plaintiff must reasonable estimate or provide some evidence of the number of class members recognizing that in determining numerosity courts must consider the geographical dispersion of the class the ease with which class members may be identified the nature of the action and the size of each plaintiffs claim recognizing that substantial numbers usually satisfy the numerosity requirement