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  • 2019 April(Z15) Math Question 11

    Algebraic & Function Expressions

    - Nested Functions

    Choice B
    $$f(x)=5\cdot 2^{x}$$ $$g(x)=10x$$ $$f(3)=5\cdot 2^{3}=5\cdot8=40$$ $$g(3)=10\cdot3=30$$ $$\Rightarrow f(3)-g(3)=40-30=10$$

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