Answer:
600
Step-by-step explanation:
3 x 10 = 30
2 x 10 = 20
30 x 20 = 600
The given ratio is:

To find the unit cost per ounce, we can use proportions as follows:

Now, solve for x:

The cost per ounce (unit cost) is then $0.12/oz
Miku would drink 4.5 ounces of water in an hour
That would be equal to the slope of the line
slope = rise / run = 100-10 / 30 = 90/30 = 3 Answer