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Mathematics, 23.07.2019 22:30 izaguirrelopez3
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. joylin’s work step 1 x=3/12=0.25 step 2 y=0.25x where did joylin make her first error? joylin divided 3 and 12 instead of multiplying the two numbers. joylin computed the decimal equivalent of 3/12 incorrectly. joylin used 0.25 as the coefficient of x instead of a product of x and y. joylin switched the numerator and the denominator when she found k.
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