If a, start subscript, 1, end subscript, equals, 9a 1​ =9 and a, start subscript, n, end subscript, equals, a, start subscript, n, minus, 1, end subscript, minus, 5a n​ =a n−1​ −5 then find the value of a, start subscript, 6, end subscripta 6​ .

If a, start subscript, 1, end subscript, equals, 4a 1​ =4 and a, start subscript, n, end subscript, equals, minus, 3, a, start subscript, n, minus, 1, end subscripta n​ =−3a n−1​ then find the value of a, start subscript, 4, end subscripta 4​ .

Write an explicit formula for a, start subscript, n, end subscripta n​ , the n, start superscript, th, end superscriptn th term of the sequence 6, comma, minus, 18, comma, 54, comma, point, point, .6,−18,54

Write the first five terms of the sequence defined recursively.a1 = 13,  ak + 1 = (−2)aka1 = a2 = a3 = a4 = a5 = Use the pattern to write the nth term of the sequence as a function of n. (Assume that n begins with 1.)an =

Find the first five terms of the sequence.an = 15 + 3na1  =  a2  =  a3  =  a4  =  a5  =  Determine whether the sequence is arithmetic. If it is arithmetic, find the common difference d. (If the sequence is not arithmetic, enter DNE.)d = Express the nth term of the sequence in the standard form an = a + (n − 1)d. (If the sequence is not arithmetic, enter DNE.)

What is the recursive formula for this arithmetic sequence?–7, –1, 5, 11, ...A.{𝑎1=−7𝑎𝑛=𝑎𝑛−1−6{ a 1​ =−7a n​ =a n−1​ −6​ B.{𝑎1=11𝑎𝑛=𝑎𝑛−1−6{ a 1​ =11a n​ =a n−1​ −6​ C.{𝑎1=11𝑎𝑛=𝑎𝑛−1+6{ a 1​ =11a n​ =a n−1​ +6​ D.{𝑎1=−7𝑎𝑛=𝑎𝑛−1+6{ a 1​ =−7a n​ =a n−1​ +6​ SUBMITarrow_backPREVIOUS