Problem

- For each of these arithmetic sequences: - State

u_1

and

d

. - Find the formula for the general term

u_n

. - Find the 15th term of the sequence. - 19, 25, 31, 37, ... - 101, 97, 93, 89, ... -

8, 9\frac{1}{2}, 11, 12\frac{1}{2}, \dots

- 31, 36, 41, 46, ... - 5, -3, -11, -19, ... -

a, a + d, a + 2d, a + 3d, \dots