(b) repeat this calculation at room temperature (298 k). (c) what is ratio of nv /n(600 k) and nv /n(298 k)

We know , vacancy concentration is given by :

Here , . ( Boltzmann's constant )

T = Absolute temperature in Kelvin .

Now ,

Hence , this is the required solution .

b. would be the answer : )

step-by-step explanation:

step 1: add -16x to both sides.

16x−4y+−16x=64+−16x  

−4y=−16x+64

step 2: divide both sides by -4.

−4y /-4 = -16x + 64/-4

answer:   y=4x−16

hope i'm right