Answer:
0.50x - 20
the x stands for how many cups he sells and the $20 is what the supplies cost
Step-by-step explanation:
y=-8x
x=-3
299.666667
2:3 is the simplified ratio
4/17 is irreducible and is a irrational decimal number 0.23529411764705882352941176470588235294117647058823529411764705882352941176470588235294117647058823529411764705882...