The surface area is 253.5 but Im not sure
See the attached graph
<h2>
Explanation:</h2>
Hello! Remember to write complete questions in order to get good and exact answers. Here you don't provide any system so I couldn't help you in an exact way, but in a general manner. When solving systems by graphing we just need to find the points of intersection of the graphs of the functions that built up the system.
Suppose you have the following system of linear equation:

yBy using graphing tools, we get the graph shown below. As you can see, the point of intersection of both lines is 
<h2>Learn more:</h2>
Solving systems by graphing: brainly.com/question/13799715
#LearnWithBrainly
Answer:
The answer is negative 12
Step-by-step explanation:



If $0.35=1 ounce
?=8.5 ounces
8.5/1*$0.35=$2.975 Therefore 8.5 ounces cost $2.975
If 1 ounce =$0.35
12.2 ounces=?
12.2/1*$0.35=$4.27
Therefore 12.2 ounces cost $4.27