Help pls show work if needed also WILL GIVE BRAINLIST IF U GUVE BOTH PARTS

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?

Which expression and diagram represent “renee biked four times as far this month as last month”?

Solve -3 (r + 5) = -9 enter ur answer in the box x = __