Question

Which equation below gives an incorrect value for the function k(x) = 512x?

Answer 1

Answer:

D. gives an incorrect value for the function k(x) = $512^{x}$

Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.  

Which equation below gives an incorrect value for the function k(x) = $512^{x}$?

A.) k(2/3)=64

B.) k(4/9)=16

C.) k(1/3)=8

D.) k(2/9)=8

My answer:

Let analyse all 4 possible answers:

• A.) k(2/3)=64  

<=> k(2/3) = $512^{2/3}$ = 64

True

• B.) k(4/9)=16

<=> k(4/9) = $512^{4/9}$= 16

True

• C. k(1/3)=8

<=>  k(1/3)= $512^{1/3}$= 8

True

• D. k(2/9)=8

<=> k(2/9) = $512^{2/9}$ = 4 not 8

Wrong

Hope it will find you well