What is the recursive rule for this geometric sequence? 189, 63, 21, 7, ...

A = a1=567; an=−3an−1

B = a1=567; an=13an−1

C = a1=189; an=13an−1

D = a1=189; an=−3an−1

You are living in aldine, tx and you are planning a trip to six flags in arlington, tx. you look on a map that has a scale of 0.5 inches to 30 miles. if the map shows the scale distance from aldine to arlington is 4 inches, how far is the actual distance?