Will make brainliest. back up your answers

Combine the information in the problem and the chart using the average balance method to solve the problem.

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?

Matt had 5 library books. he checked out 1 additional book every week without retuening any books. whats the matching equation