Question

Can somebody help me please

Answer 1

Answer:

f(4) = 122

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Calculate

$Substitute\ x=4\ into\\ f(x)=7x^2+4x-6$

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Substitute

$f(4)=7\times 4^2+4\times 4-6$

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Calculate the power

$f(4)=7\times 16+4\times 4-6$

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Calculate the product or quotient

$f(4)=112+4\times 4-6\\ f(4)=112+16-6$

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Calculate the sum or difference

$f(4)=128-6\\ f(4)=122$

I hope this helps you

:)