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F(x)=2x² +4x for x=7. if the vaue decreased by three

User Yuro
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1 Answer

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Final answer:

The value of f(x) at x=7 is 126. When decreased by three, the new value is 123.

Step-by-step explanation:

To calculate the value of the function f(x)=2x² +4x at x=7 and then decrease it by three, we first substitute x with 7:


f(7) = 2(7)² + 4(7)

= 2(49) + 28

= 98 + 28

= 126

After obtaining the value of f(x) for x=7, we decrease it by three:


f(7) - 3 = 126 - 3

= 123

Therefore, the decreased value of the function when x=7 is 123.

User Fretje
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