The given sequence is defined recursively. Use iteration to guess an explicit formula for the sequence. Simplify your answer if possible. tk = tk − 1 + 3k + 1, for each integer k ≥ 1 t0 = 0

mr. graef told us it is 13 pints

step-by-step explanation:

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answer 1 : option "c"

answer 2 : option "d"

answer 3 : option "b"

answer 4 : option "d"

answer 5 : option "b"

answer 6 : option "a"

answer 7 : option "c"

answer 8 : option "d"

answer 9 : option "c"

answer 10 : option "d"

answer 11 : option "c"

answer 12 option "b"

answer 13 option "c"

answer 14 option "c"

answer 15 option "d"

answer 16 option "a"

answer 17 option "b"

answer 18 option "c"

answer 19 option "a"

answer 20 option "a"

answer 21 option "c"

d

the radius is 2 times the diameter.

step-by-step explanation: