The inverse is (x + 10)/3
And we are waiting to see the functions listed?
Answer:
The direct variation equation can be given as:

Step-by-step explanation:
Given:
At a summer camp there are 6 campers under one counselor.
To find the direct variation equation for the number of campers in terms of number of counselor.
Solution:
Number of campers
Number of counselors
We have
∝ 
The direct variation equation can be written as:

where
is the direct variation constant.
There are 6 campers under one counselor. Using this statement we can find value of 
Given: when
then 
We have,

∴
Thus, the direct variation equation can be given as:

We can find the points using the equation to plot.

0 0
1 6
2 12
The graph is sown below.
50% off. You only have to pay $5. If you do 10% off one time you have to pay $9 and then the next time you get 40% off, you’d have to pay $6.
Unless I completely misunderstood, 50% should be better. If it’s 40% off + 10% then it will be 50% and therefore both of them are equal deals and both good.