The perimeter of the rectangle below is 84 unit . Find the length side of XY

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )

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)