Find the general solution using the method of variation of parameters for a particular solution (a) y"-3y'+2y= cos (e*) (b) y"+y tan x

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)

Which expression is equivalent to -5(3x - 6/7)

Im so bad at fractions they are not my best math thing to work on