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13 June, 22:45

The function f (x) varies directly with x and f (x) = 90 when x=30

what is f (x) when x=6

2

5

15

18

+5
Answers (1)
  1. 14 June, 01:53
    0
    18

    x=30

    y=90

    90 : 30 = 3

    y=3x

    3 * 6 = 18
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