Given the functions, f(x) = 2x^2 + 2 and g(x) = 3x + 1, perform the indicated operation. when applicable, state the domain restriction. a)2x2 - 3x + 1 b)2x2 - 3x + 3 c)5x3 + 2x2 + 2 d)6x3 + 6x + 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?