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2 July, 19:15

If f (x) + = 1/2 2 - 4x, what is the value of f (8) ?

a) 0

b) - 28

c) 96

d) 32

pd: 1/2 is times 1/2 no is 1/22

+4
Answers (2)
  1. 2 July, 19:37
    0
    F (x) = ¹/₂ · 2 - 4x

    f (8) = ¹/₂ · 2 - 4 (8)

    f (8) = 1 - 32

    f (8) = - 31

    The answer is not equal to any number, it is equal to - 31.
  2. 2 July, 19:40
    0
    F (x) = 1/2 * 2 - 4x

    Just plug in 8 for 'x':

    f (x) = 1/2 * 2 - 4 (8)

    Multiply:

    f (x) = 1 - 4 (8)

    Multiply:

    f (x) = 1 - 32

    Subtract:

    f (x) = - 31
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