Respuesta :
A bar model shows us the concepts of adding and subtracting in a visual way.
Please see the picture attached for this scenario.
c stands for the amount of change received.
To find the change subtract $20 and $9.79.
c = $10.21
Please see the picture attached for this scenario.
c stands for the amount of change received.
To find the change subtract $20 and $9.79.
c = $10.21
