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Mathematics, 13.11.2020 22:50 krrrr

Joylin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. She knows that the total cost to download 3 videos was $12. Her work to find the equation is shown below. Where did Joylin make her first error?

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Joylin is writing an equation to model the proportional relationship between y, the total cost in do...

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