Mr. Wallis decided to create another table to figure out how much it costs to send a certain number of regular letters through the mail. Use proportional reasoning to complete his table below. 4-48 HW eTool (Desmos). Homework Help ✎
Number of Letters
Cost of Stamps
First set up the proportion.
What did you multiply 0.68 by to get 5.10?
15 letters for $5.10
Multiply 2 by 7.5 to get the number of letters. Repeat this strategy for all of the blanks within the table.
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