Afurniture manufacturer is making a sofa with the dimensions shown. each sofa is filled with high-density foam that costs $0.02 per cubic inch. how much will each sofa cost to fill?

Lin 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 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?