Question

Find the first four terms of the sequence defined below, where n represents the position of a term in the sequence. Start with n = 1.

an = –7n + 6

Answer 1

`a_1 = -1\\a_2 = -8\\a_3 = -15\\a_4 = -21`

Explanation:

`a_n = -7n + 6\\a_1 = -7 * 1 + 6 = -7 + 6 = -1\\a_2 = -7 * 2 + 6 = -14 + 6 = -8\\a_3 = -7 * 3 + 6 = -21 + 6 = -15\\a_4 = -7 * 4 + 6 = -28 + 6 = -21`