Remember
(x^n)^m=x^(mn)
(x^4)^2=x^(4*2)=x^8
Given the sum:

The sum is given below:
Therefore, the sum of the polynomials is:
Answer:
-42
Step-by-step explanation:
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.