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Find the value of f(3) for each of the following:
1. f(x) = 7 – 8x 2. f(a) = -5(a – 2)
3. f(h) = - h/72 4. f(m) = m(m + 4)

Sagot :

devishri1977

Answer:

Step-by-step explanation:

1) f(x) = 7 - 8x²

f(3) = 7 - 8*3²

     = 7 - 8*9

     = 7 - 72

f(3) = -65

2) f(a) = -5(a-2)

f(3) = -5(3 -2) = -5 * 1 = -5

[tex]3)f(h) =\dfrac{-h}{72}\\\\\\f(3)=\dfrac{-3}{72}=\dfrac{-1}{24}[/tex]

4) f(m) = m(m +4)

f(3) = 3*(3+4) = 3 * 7 = 21

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