Please help for 18 points I am stuck . Thank you.

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

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)

What is the inverse of the function f(x) = 2x + 1?