How do I solve for x

Two lines parallel to the same plane are parallel to eachother

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 the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12