(1/5)^r * (1/4)^18 = 1/(2(10)^35). What is r? Choose the correct option
A) 17	B) 18	C) 34	D) 35	E) 36
We need to arrive at a common base. --&gt;   (5)^(-r) * 2^(-36) = 2^(-36)*5^(-35)   5^(-r)=5^(-35)   -r=-35   r=35=35
<result>D</result>
(1/5)^r * (1/4)^18 = 1/(2(10)^35). What is r?