Simplify the expression: 5+12 divided by 2x2

What expression is equivalent to (2x-1)(x-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?

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12