please help me understand the case study

below the correct answer

this all we got, there is no more information..

casestuor Aav W WCntia krairss - Prta asb Non Matkesund and infimaian Q1 - With these new estimates, What is the AW of the Investment and Salvage value for YORK AC unit?[a] Q2 - With these new estimates, What is the FW of the Investment and Salvage value for YORK AC unit?[b] Q3 - With these new estimates, what is the recalculated AW maintenance cost for the YORK AC units?[c] Q4 - With these new estimates, what is the recalculated PW maintenance cost for the YORK AC units?[d] Q5 - With these new estimates, what is the recalculated Total AW cost for YORK AC units.[e] Q6 - With these new estimates, what is the recalculated Total FW cost for YORK AC units.[f] Q7 - With these new estimates, what is the recalculated Total PW cost for YORK AC units.[g] Q8 - If these estimates had been made 4 years ago, would YORK still have been the economic choice, why explain your answer [h] Q9 - What is difference in capital recovery amount for the YORK units with these new estimates?[i] Q10- If MARR is changed to 8% for the upcoming 6 years what will be the Total PW for the YORK units?[j] Correct Answer 5309.52 Correct Answer 93175.45 Correct Answer 837.61 Correct Answer 4,732.67 Correct Answer 23247.41 Correct Answer 407962.57 Correct Answer 131353.03 Correct Answer yes Correct Answer 170.95 Correct Answer 174774.58 casestuor Aav W WCntia krairss - Prta asb Non Matkesund and infimaian Q1 - With these new estimates, What is the AW of the Investment and Salvage value for YORK AC unit?[a] Q2 - With these new estimates, What is the FW of the Investment and Salvage value for YORK AC unit?[b] Q3 - With these new estimates, what is the recalculated AW maintenance cost for the YORK AC units?[c] Q4 - With these new estimates, what is the recalculated PW maintenance cost for the YORK AC units?[d] Q5 - With these new estimates, what is the recalculated Total AW cost for YORK AC units.[e] Q6 - With these new estimates, what is the recalculated Total FW cost for YORK AC units.[f] Q7 - With these new estimates, what is the recalculated Total PW cost for YORK AC units.[g] Q8 - If these estimates had been made 4 years ago, would YORK still have been the economic choice, why explain your answer [h] Q9 - What is difference in capital recovery amount for the YORK units with these new estimates?[i] Q10- If MARR is changed to 8% for the upcoming 6 years what will be the Total PW for the YORK units?[j] Correct Answer 5309.52 Correct Answer 93175.45 Correct Answer 837.61 Correct Answer 4,732.67 Correct Answer 23247.41 Correct Answer 407962.57 Correct Answer 131353.03 Correct Answer yes Correct Answer 170.95 Correct Answer 174774.58