Someone please help me with this

In a school 2/3 of the students study a language of those who study a language 2/5 study french

Solve the equation - 2(m -30) = -6m a-15 b-13 c-8 d8

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?