17.2+6.08 find the sum or the difference

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)

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.