Answer:
tip total $4
tip per person $2
total (bill plus tip) $29.
total each person $15
Step-by-step explanation:
3
dy/dx = 6dx/dx -1dy/dx
dy/dx= 6 - 1dy/dx
2dy/dx= 6
dy/dx = 3
Well I would say inferntial because its more testing your hyptohsis between two friends to see which coffe they like more
