Answer: I attached a picture of the graph
Answer:
The solution is given below:
Step-by-step explanation:

As we know the value of k and r so the equation will be





Well you have to first find the constant of Brand X which would be 2.70/10 = .27. Brand Y is .4 more so that would be .31 per ounce. So then .31 x 11 = 3.41. The cost of 11 ounces of brand Y is $3.41.