Question

The explicit formula for the nth term of an arithmetic sequence is an = a1 + (n - 1) d. What is the simple formula corresponding to the explicit formula if the first term of the sequence is -10 and the difference between terms in the sequence is 3?

Answer 1

Make a1=-10, and d=3, and substitute in the formula you give.

Answer 2

Then simplifies.

Answer 3

\[a_1=-10+3(n-1)=3n-13\]

Answer 4

I'm gonna give you a harder one kay...?

Answer 5

Ok, we'll try. ;)