How do I solve this
I’m very confused

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?

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?

The surface area of the triangular prism is .