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Suppose that the function F is defined f...

Suppose that the function F is defined for all real numbers r by the formula `f(r)=2(r-1)+3`. Evaluate F at the input values `0, 2, x+2`, and `f(2)`.

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In each case, we substitute the given input value for r into the formula for F:
`f(0)=2(0-1)+3=-2+3=1`
`f(2)=2(2-1)+3=2+3=5`
`f(x+2)=2(x+2-1)+3=2x+5`
`f(f(2))=f(5)=2(5-1)+3=11`
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