I need help some one help me to complete it

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)

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me