Question #4
Solve 2x2 - 52 - 3 = 0 for x.
A) X=- or x = -3
B) x =
= - or x = 3
C) x
x = -3
D) x=
or 2 = 3

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?