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The first term of a linear sequence is 9 and the common d...

The first term of a linear sequence is 9 and the common difference is 7. If the nth term is 380, find the value of n.

A.

45

B.

54

C.

56

D.

65

Correct answer is B

Tn=a+(n1)d

380=9+(n1)7

380=9+7n7380=2+7n

7n=3802=378