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Tires R Us is having a 30%-off sale. Find the savings on a tire that regularly costs $45. Homework Help ✎

Your percent ruler might look something like this:

Using the Math Notes box below as a reference, can you scale the rest of the ruler in order to find the 30% equivalent in dollars? It may help to first find the value of 10%.

30% of $45 is $13.50. Remember to show your work!