Find the first five terms of the sequence specified by the recursion formula
$a_{k + 1} = a_{k} + 3$ , if $a_{1} = 7$ .

7, 10, 13, 16, 19

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6, 9, 12, 15, 18

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8, 11, 14, 17, 20

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5, 8, 11, 14, 17

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Solution

The correct option is A $7, 10, 13, 16, 19$
Given $a_{k + 1} = a_{k} + 3$ and $a_{1} = 7$
So $a_{2} = a_{1} + 3 = 7 + 3 = 10$
$a_{3} = a_{2} + 3 = 10 + 3 = 13$
$a_{4} = a_{3} + 3 = 13 + 3 = 16$
$a_{5} = a_{4} + 3 = 16 + 3 = 19$

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Similar questions

a_{k + 1} = a_{k} + 3

a_{1} = 7

a_{k + 1} = 3 a_{k}

a_{1} = 2

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