rnicoleo rnicoleo

16-11-2018
Mathematics

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If f(x)=a(b)^x where f(5)=15 and f(8)=170 find b

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wegnerkolmp2741o wegnerkolmp2741o

16-11-2018

If f(x)=a(b)^x where f(5)=15 and f(8)=170

f(5) = 15 = a 5^x

f(8) = 170 = a8^x

divide

170 = a8^x

----------------

15 = a 5^x

34/3 = (8/5)^x

b = (8/5)

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