Arithmetic Sequences Practice
 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 Sequencesa1 = ,, 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 Sequencesa11 =         + (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 Sequencesa25 =           + (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 Sequencesan =           + (n - 1) • an = a1 + (n - 1) • d,,
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