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2 years ago

Given f(x) = 3x^2 + 2x – 1 and g(x) = 4x-5 find ( g of f) (-2)

Mathematics

2 answers:

pishuonlain [190]2 years ago

7 0

Answer:

Step-by-step explanation:

Evaluate f(- 2) then substitute the value obtained into g(x)

f(- 2) = 3(- 2)² + 2(- 2) - 1 = 3(4) - 4 - 1 = 12 - 5 = 7 , then

g(7) = 4(7) - 5 = 28 - 5 = 23

miv72 [106K]2 years ago

4 0

$\text{Given that,}\\\\f(x) = 3x^2 +2x -1\\\\f(-2)=3(-2)^2 +2(-2) -1 = 12-4-1=7\\\\g(x) = 4x -5\\\\\text{Now,}\\\\(g \circ f) (-2)\\\\=g(f(-2))\\\\=g(7)\\\\=4(7)-5\\\\=28-5\\\\=23$

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From the picture attached,

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Step-by-step explanation:

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2 years ago

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Answer:

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Answer:

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Step-by-step explanation:

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Therefore, we have the two points (0, 0) and (-2, -6).

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To graph, simply plot (0, 0) and (-2, -6) and draw a line connecting them. This is shown below.

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2 years ago

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