The image attached shows an operation that can be represented with whole numbers, becuase there are positive and negative characters.
So, we know by given that there are +4 circles and -7 circles, and the whole can be expressed as the algebraic sum of them,
Therefore, the model can be represented by the number -3, which is the whole because is the result of the operation that represent each type of element.
Step one: Do half of 28. So now you know what one hour is okay. Step two: You now know three hours is 42 stops Step Three: total amount in 4 hours 28 times 2 and that is 56 stops Hopes this helps mate
