How to show full work on this problem find the length of chord UV show work

Brainlest answer can you find the area and circumference of a circle given the radius or diameter? if its yes or no explain why

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 is equivalent to -5(3x - 6/7)