You could subtract 4.53x from 7.21x and have 2.68x+1.12
The first answer: you have to 560-200 which equals 360 then divide by 45 which equals 8 so your answers 8
The second answers: first 6.91- 1.45= 5.46 then take 5.46 and divide by 0.42 which equals 13 so your answers 13
Firstly, this is the most important thing to know (x,y). This means that you plot the first number in the x axis and the second number in the y axis. For example, (4,10). You would plot the 4 on the right side of the x axis and you would plot the 10 all the way at the top in the y axis.
