3 4 additional practice arithmetic sequences answer key

Namesavvasrealize.com3-4Additional PracticeArithmetic SequencesTell whether or not each sequence is an arithmetic sequence. If it is an arithmeticsequence, give the common difference.1.4, 8, 12, 16, …2.−11, 5, 0, 6, …3.12, 23, 34, 45, …Write a recursive formula and an explicit formula for each arithmetic sequence.4.9, 15, 21, 27, …5.1.5, 2.25, 3, 3.75, …6.7, 0,−7,−Recursive:Recursive:Recursive:Explicit:Explicit:Explicit:Write an explicit formula for each recursive formula and a recursive formula foreach explicit formula.7.a1=58.a1=−89.an=15+an=an−1+3an=an−1−10.You are given the first four terms of an arithmetic sequence. Why might you14, …4n3