i need all accurate answers..22 to 32..ASAP and i will upvote you..thanks..i need exact answer plus little explanation if possible..Thanks

22. Find the common difference in the arithmetic sequence: 205, 199, 193... 23. Find a, for the geometric sequence with a1 = 8, n = 9, and r = - 1. 24. Find the sum of the series En=3 2n 25. You initially have saved $50. Each month you add $10 more to your savings account. Write an explicit formula to model the amount you have saved after n months. 26. A diamond is purchased for $2500. Suppose its value increased 5% each year. Write an explicit formula for the value of the diamond after n years. 27. Melanies dog just had a litter of puppies consisting of 4 males and 7 females. What is the probability she will select ] female, at random, to give away? 28. Melanie's dog just had a litter of puppies consisting of 4 males and 7 females. What is the probability she will select 2 females, at random, to give away? 29. What is the sample space when two fair coins are tossed? 30. If an event is certain to happen, the probability of the event is 1 a. True b. False 31. If an event can never happen, the probability of the event is -1. a. True b. False 32. Suppose one card is randomly selected from a standard deck of playing cards. What is the probability that the card is a heart or a king