You would convert the percent into a decimal, which would be 0.00039296, then multiply it by 9, which is 0.00354564. To find the total, you would do 9 plus that, which is 9.00354564.
Answer:
Because it bears an equal sign
Expressions don't have a definite solution to the problem.
The length of the last side is 13.416, I am not sure what you need to round your numbers to but you can round it to whatever you teacher wants.
Work shown in picture
Certain because the papers are labeled from 1 - 12, thus you will always pick out a number less than 15.
5197+175.75x=5500+150.50x
25.25x=303
X=12 (tons)