Help this is hard for my friend and i dont know how to do it lol

Find the value of the variable and the length of each secant segment

1. writing an equation for an exponential function by 2. a piece of paper that is 0.6 millimeter thick is folded. write an equation for the thickness t of the paper in millimeters as a function of the number n of folds. the equation is t(n)= 3. enter an equation for the function that includes the points. (-2, 2/5) and (-1,2)

Rewrite so the subject can be y in the formula d=m-y/y+n