Question

Find the 18th term of the sequence 5, 8, 11, 14, 17...

a. An 18th term does not exist
b. 53
c. 56

Answer 1

56

Explanation:

Answer 2

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