Question

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

Answer 1

0.5+(n*1.5)

where n is the nth term

Answer 2

you need to find the common difference d

as the 1st term a= 2 and the number of terms n = 15

then use the formula

\[T _{15} = 2 + (15 -1)\times d \]

Answer 3

Thanks