A laser beam with an output of 6 milliwatts is directed into a series of mirrors. The laser beam loses 2% of its power every time it reflects off of a mirror. The power p(n) is an exponential function of the number of reflections in the form of p(n)=ab^n. What is the value of a?

Rick is driving to his uncles house in greenville, which is 120 miles from ricks town .after covering x miles rick she's a sign stating that greensville is 20 miles away. which equation when solved will give the value of x. a: x+120 = 20 b: x x120 =20 c: x +20 equals 120 d: x x20= 120