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

I need help with 53 to 60 ASAP please help this I dont understand this I need to get it done before Monday can someone please help me with it class=

Respuesta :

Answer:

53. 256

54. 66

55. 117

56. 91

57. 285

58. 408

59. n(7n - 5) / 2

60. 325

Step-by-step explanation: