Please help me with my hw, I keep getting this wrong. Show work so I can understand what im doing wrong please

7:28 PM Thu Mar 25 Content .III ViewSubmissioanradesc X j, D https://production-gradescA X C i productiongradescopeuploads.53uswest2.amazonaws.com Problem 5 16 points Let X and Y be jointly continuous random variables with joint PDF 26214 yS$Sy, 3120 0 otherwise baa/(10,3!) = { (a) Evaluate the probability that 3X is greater than Y. You can leave the answer in terms of integrals with the correct limits. (b) Calculate f X(3L') and fy(y) . You can leave the answer in terms of integrals with the correct limits. (Don't forget the ranges.) (c) Determine f le(a:|y) . You can leave the answer in terms of integrals with the correct limits. (Don't forget the range.) ((1) Determine Var[X + Y]. You can leave the answer in terms of integrals with the correct limits. 2:} "3'38%I