a)Find the 1st term and the common difference of the arithmetic sequence.
b)Find the general term of the arithmetic sequence.
an = a1 + (n-1)d
18 = a1 + (5-1)d
27 = a1 + (8-1)d
-9 = -3d
d = 3
then a1 = 18 - 12 = 6
an = 6 + (n-1)3
common difference=3,1st term=6and general term=3+3n
If a sequence has a first term of 16 and a common difference of -7, what is the 5th and 6th term
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