noriega1270
noriega1270 noriega1270
  • 02-09-2018
  • Mathematics
contestada

Q # 14. help me please to resolve

Q 14 help me please to resolve class=

Respuesta :

jasondaykem
jasondaykem jasondaykem
  • 02-09-2018

A(n) =2+9(n-1)= 2 + 9n - 9= 9n -7

A(n-1)= 2+9[(n-1)-1]= 2 + 9(n-2)= 2+ 9n - 18= 9n -16

A(n)- A(n-1)= (9n-7)-(9n-16) = -7+16=9

A(n)= A(n-1) +9 is the answer

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