ADLANBSTELTA Hruadwater Itwaiaute a Techerical schoch Varlatke Castine Tecinese Statenien Ier the fall Ierm Registrabors, reconds, and marketing costs vary by the number of enrolled students, while instructional couts vary by the nuenber of crede hours. Depreciation es a foxid cost. Prepere a. variable costing income statement showing the contritution miargin and operating income for the Fall term