Elena has some bottles of water that each holds 17 fluid ounces.

1. Write an equation that relates the number of bottles of water () to the total volume of water () in fluid ounces.
2. How much water is in 51 bottles?
3. How many bottles does it take to hold 51 fluid ounces of water?

There are about 1.61 kilometers in 1 mile. Use  to represent a distance measured in kilometers and  to represent the same distance measured in miles. Write two equations that relate a distance measured in kilometers and the same distance measured in miles.

In Canadian coins, 16 quarters is equal in value to 2 toonies.

Each table represents a proportional relationship. For each table:

1. Fill in the unknown values.
2. Draw a circle around the constant of proportionality.

Describe some things you could observe about two polygons that would help you decide that they were not scaled copies.