Why are we allowed to set the expression x - 5 equal to 0 in order to find the solution for x? What would this solution look like on a graph?

Use the distributive law to multiply. 3(4x + 5y + 6)

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?

With both problems. a.s.a.p directions on photo ^