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29 May, 19:09

B) f (x) = (10 - 3x) (4 - 5x)

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Answers (2)
  1. 29 May, 19:18
    0
    15x2 - 62x + 40

    Step-by-step explanation:

    (10 - 3x) (4 - 5x) = 10 x 4 + 10 x - 5x - 3x x 4 - 3x x - 5x = 15x2 - 62x + 40

    f (x) is a parabola, now you have to graph
  2. 29 May, 19:28
    0
    x=10/-3, 4/5

    Step-by-step explanation:

    f (x) = (10 - 3x) (4 - 5x)

    10-3x=0

    -3x=-10

    x=10/3

    4 - 5x = 0

    -5x = - 4

    x = 4/5
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