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20 August, 11:24

Sabrina is using an online calculator to calculate the outputs f (n) for different inputs n. The ordered pairs below show Sabrina's inputs and the corresponding outputs displayed by the calculator: (1, 6), (2, 11), (3, 16), (4, 21) Which of the following functions best represents the rule that the calculator uses to display the outputs? f (n) = 5n - 1 f (n) = 5n + 1 f (n) = 4n + 3 f (n) = 4n - 3

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  1. 20 August, 11:53
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    Test each

    (1,6)

    input is 1 and ouput is 6

    f (1) = 5 (1) - 1=6? false

    f (1) = 5 (1) + 1=6? true

    f (1) = 4 (1) + 3=6? false

    f (1) = 4 (1) - 3=6? false

    answer is f (n) = 5n+1
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