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The common difference. For the following sequence: 6, −2, −10, −18, ... Find: The next three terms. Note: The "common difference" is the number that you add to each termto get the next term. If the terms are increasing, the common differenceis positive. Arithmetic Sequences , , For the following sequence: -9, -4, 1, 6, 11, ... Find: The common difference: The next three terms: The first term: Arithmetic Sequences a1 = , , The common difference: For the following sequence: 9, 13, 17, 21, ... Find: Find the 11th term: The next three terms: The rule for the nth term. an = + (n - 1) • an = a1 + (n - 1) • d Arithmetic Sequences a11 = + (11 - 1) • a11 = , , For the following sequence: 18, 16, 14, 12, ... Find: The common difference: The next three terms: The rule for the nth term: Find the 25th term: Arithmetic Sequences a25 = + (25 - 1) • a25 = an = + (n - 1) • , , The common difference: For the following sequence: 1, 7, 13, 19, ... The next three terms: Find: The rule for the nth term. Find the 21st term. a21 = Arithmetic Sequences an = + (n - 1) • an = a1 + (n - 1) • d , , |