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faust18 [17]
3 years ago
7

Let f(x) = 2x − 6. solve f−1(x) when x = 2. select one: a. −5 b. 4 c. −2 d. 7

Mathematics
1 answer:
Dvinal [7]3 years ago
8 0
F(x) = 2x - 6

y = 2x - 6
2x - 6 = y  |add 6 to both sides
2x = y + 6    |divide both sides by 2
x = 1/2y + 3

f^{-1}(x) = 1/2x + 3

f^{-1}(2) = 1/2 · 2 + 3 = 1 + 3 = 4

Answer: b. 4
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√-225 • √-36 . show work.
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Step-by-step explanation:

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On the other hand, ...

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If you consider all the roots at each stage, the result is ±90. Since you're working with complex numbers here, it is reasonable to recognize every number has two square roots.

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