The answer is: "4" .
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" f(-1) = 4 ."
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Explanation:
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Given: " f(x) = 3x² + 5x + 6 " ;
Then plug in "-1" for all values of "x" to find "f(-1)" ;
→ f(-1) = 3(-1)² + 5(-1) + 6 ;
= 3(1) + (-5) + 6 ;
= 3 - 5 + 6 ;
= -2 + 6 = 4 .
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The answer is: "4" .
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" f(-1) = 4 ."
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