Need help with these 3 questions! Super lost! If possible please break it down to how you got the answer! Thank you!

21) Lechner Corporation is an oil well service company tha: measures its output by the mber of wells serviced. The cempany has provided the lixed and ariable cust estites that it uses fer budgeting purposes and the acual results of uperations for June Fixed Element per Variable Element pesctual Tolal Month S 0,600 S42,800 Well Serviccdfor June Revenue Employee slaries and wages Servicing materials Olher expenses S 5,600 148,000 S 1,20 73,700 S 50 13,600 S 43,3oU When the company prepared its planning budget at the beginning of June, it assumed that 24 wells would bave been serviced. However, 26 wells a uctually serviced durin June The activity variane lot revenue o Jue would have bn closcs to A) $11.200 U B) S13.600 U CIS11,200 F D) $13,60O F 22 Lechnet Corporation is an oil well service copany that measus ils output by he umber of els serviced. The ecmpany has pcovided the lollo lixed and variabcost etbat it uses for budgeting purposcs and the actual results of opcrations for June. Fixed Element perVariable Elerment pertctual Total Month Well Serviced for June Reveaue Employer salaries and wages Servicing materials Other expenses S 5,60 S 148,000 S 1,20 3,700 S 5003,600 S 43,300 $ 40,00 $ 42,800 When the Ca prepared its planning hudget at the heginning of June, it assumed that 24 wells would have heen serviced. However, 2wells were actually serviced during June. The activity variance fot "Empleyce salaries and wags for Junc would have boen closest to A) $2,400 U B) S4,300 F C) 84,300 U D) $2.400 F 23 Lechner Corporaton isan il well service copany a measurs its output by the umber of wells serviced. The ecmpany has provided the to lixed and ariabe cost estiles hal itus for budgeting purpuss and the actual results of operalions for June. Fixed Element per Variable Element pesctual Total Month Well Serviced for une Reveniue Employee slaries and wages Servicing maerial Oher expenses $ 5.60$ 148.400 S 1.20 S 73,700 S 500 S 13.600 S 43,300 40,60 S 42,800 When the Co. prepared its planning budget at the beginning of June, it assuned that 24 wells woul have been serviced. Howeer, 26 wells were atually seviced durng June The revenue variance in the Revenue and Spending Variarces column ofa report comparing actual resalts to the flexible budget for June would h been closest to: A$2,100 F B) S13,600 F C)S2.40U L D) $13,600 U