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Answer :

[tex]\begin{gathered} \text{Given;} \\ f(x)=5(2-x) \\ \text{What is the value of f(-2)} \\ f(-2)=5(2-\lbrack-2\rbrack) \\ f(-2)=5(2+2) \\ f(-2)=5(4) \\ f(-2)=20 \end{gathered}[/tex]

The correct answer is option B (which is 20)

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