Respuesta :

apologiabiology
adds 3 each time
first term is 5
an=a1+d(n-1)
d=common difference
a1=first term
an=5+3(n-1)
18th term
a18=5+3(18-1)
a18=5+3(17)
a18=5+51
a18=56

C is answer

Answer:

56

Step-by-step explanation:

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