NR.2.QL.7

Distinguish between proportional and non-proportional real world situations

Example Problems
Apples are on sale for $3.12 per kilogram.

Is the total cost of the apples
proportional to the total mass?
A soup recipe uses 4 cups of broth for every 1.5 cups of rice.

Is the amount of broth
proportional to the amount of rice used?
A copy center charges per page for color prints and has no setup fee.

Is the
total price proportional to the number of pages printed?
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