Which function below is the inverse of f(x) = 4x-3 over 2

If 1/2 is half of 1, what is 1/2 of 2,3, and 4?

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

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?