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Bad White [126]
3 years ago
13

HELP NOW!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
2 answers:
Vladimir79 [104]3 years ago
8 0
F(x) = 50,000 (0.8)^x

⇒ y = 50,000 (0.8)^x
⇒ log y = log 50,000 + x log 0.8
⇒ x log 0.8 = log y - log 50,000 = log (y/50,000)
⇒ x = log(y/50,000) / log 0.8
⇒ x = log0.8(y/50,000)

 <span>⇒ f^-1(x)=log0.8(x/50,000)

Answer is D

Hope it helps!

</span>
Umnica [9.8K]3 years ago
6 0
I think that it is B because I'm pretty sure it has to be log of 50,000. But I forgot how to get the rest of it but B is the only one with log of 50k.
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