The two rectangles below are similar. which ratio will help to find the value of the missing side of the rectangle? A.2.1\6.3= 8.7\x
B.8.7\x=6.3\2.1
C.6.3\8.7=2.1\x
D.6.3\8.7=x\2.1
plz help!​

Consider this expression and the steps to evaluate it. 4^5(−2)^9/4^8(−2)^3 1. apply the quotient of powers:      (−2)^a/4^b 2. evaluate powers:           c/d select the value of each variable. a = _ b = _ c = _ d = _