Question

I need help with #53 to #60 ASAP … please help this I don’t understand this …. I need to get it done before Monday … can someone please help me with it

Answer 1

53. 256

54. 66

55. 117

56. 91

57. 285

58. 408

59. n(7n - 5) / 2

60. 325

Explanation: