I CANT FIGURE THIS OUT PLEASE HELP ME FIND angles FAB and BAC

What is the binomial expansion of (2x-3)^5

Could someone with number 1 and 2

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)