Find the area of the following surface using the given explicit description of the surface. the paraboloid z equals 2 left parenthesis x squared plus y squared right parenthesis, for 0less than or equalszless than or equals8 set up the surface integral for the given function over the given surface s as a double integral over a region r in the xy-plane.

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?