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3. On the third day of the fundraiser, Emma decides she and her friends should sell wristbands and car decals
together. She thinks the package price should be $3.75. She sells 3 packages.
a. How can the amount of the goal's decrease after Emma's sales be represented as an addition sentence?
b. What is the sum, and what does it mean in this situation?
c. Show the sum on a number line.