It's the last choice. In the top row you have the 1's that are the coefficients on the x and the y, and the solution for that equation is 21; in the second row you have the 5 from the x and the 4 from the y and the solution for that equation which is 20. I'm more used to writing them down instead of across, but there you have it anyways
You just add up all the numbers in each position
so
-10 -1 5
-4 14 1
so C
Answer:
6: the scale is by 2s, which spreads the data out more.
7: more saxophones can fit in the box than the others.
C. 4:5=32:40 is your answer
Treat each ratio like fractions. Note the equal sign. This means that, when each fraction is simplified, they would be the same.
4/5 = 4/5
(32/40)/(8/8) = 4/5
4/5 = 4/5
∴ (C) is your answer
~<em>Rise Above the Ordinary, Senpai</em>
