Simplify -16 -22+ 22) A. -16 B. 39 C. 16 D.38 Help me PL ;(

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?

Combine like terms to make a simpler expression 3z+z

With alll of except for the 2 that i did already