Ineed asap

the area of a circle is 78.5 square centimeters, and a subtending arc on the circle has an arc length of 6 pi. the estimated value of pi is 3.14.

the measure of the angle subtending by the arc is degrees

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.