Add all the hours from Monday to Wednesday after that you subtract the total from the overall hours
3(r-6)+2=4(r+2)-21
3r-18+2=4r+8-21
3r-16=4r-13
-3=r
r=-3
I’m not sure what the question is but I’m just gonna assume that you need the equation: y=1/2x+5
If Sofia and Juana worked together I would take them 1 hour
