1. 
                                 Advanced Algebra Prep - Arithmetic Sequences                                                                                                         Name___________________________________
                 Show formulas and work for each problem!                                                                                                                            Date________________ Period____
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                 Determine if the sequence is arithmetic. If it is, find the common difference.
                 1) −38, −68, −98, −128, ...                                                                                                                   2) 7, 11, 15, 19, ...
                 3) −1, 99, 199, 299, ...                                                                                                                      4) −37, −33, −29, −25, ...
                 Find the explicit formula and the recursive formula.
                 5) 38, 238, 438, 638, ...                                                                                                                     6) 13, 213, 413, 613, ...
                 7) −19, −28, −37, −46, ...                                                                                                                    8) −31, −29, −27, −25, ...
                 Given the first term and the common difference of an arithmetic sequence find the 52nd term and the
                 explicit formula.
                                                                1                                                                                                                3
                 9) a1 = 1, d =                                                                                                                                10) a1 = 3, d =
                                                                2                                                                                                                2
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                2. 
                                 Given a term in an arithmetic sequence and the common difference find the term named in the problem.
                 11) a18 = 84, d = 4                                                                                                                           12) a26 = −5009, d = −200
                     Find a39                                                                                                                                      Find a29
                 Given a term in an arithmetic sequence and the common difference find the explicit formula.
                 13) a28 = 75, d = 4
                 Given two terms in an arithmetic sequence find the term named in the problem.
                 14) a16 = −83 and a39 = −152                                                                                                                  15) a16 = −419 and a38 = −1079
                               Find a26                                                                                                                              Find a31
                 16) a15 = 146 and a37 = 366                                                                                                                   17) a18 = −196 and a37 = −386
                               Find a23                                                                                                                              Find a24
                 Given two terms in an arithmetic sequence find the explicit formula.
                 18) a10 = −9 and a30 = −109
                 Given two terms in an arithmetic sequence find the common difference.
                 19) a16 = −56 and a33 = −141                                                                                                                  20) a16 = 24 and a36 = 64
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                3. 
                                                                                     Answers to Show formulas and work for each problem!
                1) d = −30                  2) d = 4                    3) d = 100                                                                                                                 4) d = 4
                5) Explicit: an = −162 + 200n        6) Explicit: an = −187 + 200n                                                                                                        7) Explicit: an = −10 − 9n
                   Recursive: an = an − 1 + 200                                                                                              Recursive: an = an − 1 + 200                    Recursive: an = an − 1 − 9
                               a1 = 38                                                                                                                  a1 = 13                                         a1 = −19
                8) Explicit: an = −33 + 2n                                                                                                                     53                         159
                                                                                                                                   9) a52 =                                   10) a52 =
                   Recursive: an = an − 1 + 2                                                                                                                  2                           2
                                                             a1 = −31                                                                                               1 1                         3 3
                                                                                                                                             Explicit: an =           + n         Explicit: an = + n
                                                                                                                                                                    2 2                         2 2
                11) a39 = 168                                                                         12) a29 = −5609                                                13) an = −37 + 4n          14) a26 = −113
                15) a31 = −869                                                                        16) a23 = 226                                                  17) a24 = −256                18) an = 41 − 5n
                19) d = −5                                                                            20) d = 2
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