show work please!

Wilcan flyoveen affers ocenic overnights of Mount Saint Helens, the volcano in Washington State that exploakey enuptod in 1902 Data conceming the comosenys operators in July appear below: The company measures its activity in tems of flights. Customens can buy individus bokets for overfights or hire an entire plane for an quertight at a 6 sscount. Requiled: unfavorable, and "None- for no effect (ie., zero variance). Input all amounts as positive values.) Vulcan Flyovers Flexible Budget Performance Report For the Month Ended July 31