Question

Find the 15th term of the arithmetic sequence.
2, 3.5, 5, 6.5, ...

Answer 1

If we needed the 12th term, we would calculate a12 = (0.01)612 - 1 = (0.01)611 ... Given our generic arithmetic sequence a1, a2, a3, a4, ..., an, ... add the first 10 terms of sequence B, we would know that a1 = 0.01, r = 6 and n = 10.

Answer 2

The difference in each term is d=1.5.
To find the nth term:
a(n)=a(1)+(n-1)d

Answer 3

a(15)=2+14(1.5)

Answer 4

so it would be 21.5?

Answer 5

no...evaluate the equation i just wrote