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3 years ago

If ƒ(n) = 3n 2 - 7, then ƒ(-2) equals _____.

Mathematics

1 answer:

Gnom [1K]3 years ago

5 0

F(n) = 3n² - 7

f(-2) = 3(-2)² - 7
f(-2) = 3(4) - 7
f(-2) = 12 - 7
f(-2) = 5

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The inverse is the following (we calculate it by replacing f(x) by x and x by f(x)):

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So the correct answer is D.

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