24-10-2017
Mathematics

contestada

WILL GIVE BRAINEST
find f(-2) for f(x)=2×3^x
a.-18
b.1/18
c.-36
d.2/9

Respuesta :

umarsaqib605oxqcm0 umarsaqib605oxqcm0

24-10-2017

d is correct. f(-2) the number in the bracket is an input so..
whenever you see an X in the function replace it with -2
f(-2)=2*3^-2
3^-2 is 1/9
1/9 * 2 is simply 2/9
so D is correct

Answer Link

MohammadAmir MohammadAmir

24-10-2017

f(-2)=2*3^-2
=2/3^2
=2/9

Answer Link

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