Question 460569
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Each function value is one-half of the previous value, so you are just multiplying 30 times one-half raised to the *[tex \Large x] power.


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ y\ =\ f(x)\ =\ 30\,\cdot\,2^{-x}]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ y\ =\ f(6)\ =\ 30\,\cdot\,2^{-6}\ =\ 0.46875\ \approx\ 0.47]



John
*[tex \LARGE e^{i\pi} + 1 = 0]
My calculator said it, I believe it, that settles it
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