gs395 gs395
  • 15-10-2017
  • Mathematics
contestada

Which exponential function goes through the points (1, 8) and (4, 64)

Respuesta :

Аноним Аноним
  • 15-10-2017
The answer would be f(x)=4(2)x.
Hope this helps!
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Catya
Catya Catya
  • 15-10-2017
(input, output)
f(x) = a*b^x

8 = 1*8^1
or
8 = 4*2^1
or
8 = 2*4^1

then looking at the second, 4 is the input x. there is only one option.

64 = 4*2^4
a = 4 , b = 2

f(x) = 4*2^x


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