Answer:
k= 8/5
Step-by-step explanation:
here x= 5 and y= 8
we have y=kx
k= y/x
k= 8/5 this is constant of variation
Answer:

Step-by-step explanation:
Given expression is,

By using the law of logarithm,



By comparing exponents on both the sides of the equation,


Therefore,
will be the answer.
Answer:
3).

4).
If it was by 10, k = 3 by 10
k = 30
5).

Click off the first one because 180 (Thea) < 225 (Eleanor). Then keep the second one and click the third and fourth one.
The answer is 6/40. All the others equal 1/5.