7) Write a problem of your own a) Decide on an exponential growth or decay situation
b) Give enough information to set up a formula to model your
situation
c) Ask and solve two questions about your situation.
Help pls show work

If you could answer these your a life saver

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?

Is of - 4x + 2? a. 3 b. 4 c. 6 d. 5