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6 September, 21:30

1. f (x) = 2x + 6 Evaluate f (2)

2. f (x) = 3x Evaluate f (a + 1)

3. f (x) = 3x - 1 and g (x) = 5x + 3 Evaluate f (2) + g (3)

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  1. 6 September, 21:51
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    1) f (x) = 2x+6

    f (2) = 2 (2) + 6

    =4+6

    =10

    2) f (x) = 3x

    f (a+1) = 3 (a+1)

    =3a+3

    3) f (x) = 3x-1 and g (x) = 5x+3

    f (2) = 3 (2) - 1

    f (2) = 6-1

    =5

    g (3) = 5x+3

    =5 (3) + 32

    =15+3

    =18

    f (2) + f (3) = 5+18

    =23.
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