4bags of cement do 18m^2, how many m^2 can be done with 7 bags

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?

Find the value of x for which line a is parallel to line b

Find the value of x in each case. give reasons to justify your solutions! d q ∈ pr