Question 194394
Opt.1=42+5x
Opt.2=8.5x
42+5x<8.5x
5x-8.5x<-42
-3.5x=-42
x>-42/-3.5 ( note: when dividing by a negative value the < sign changes to a > sign).
x>12 hours of court rental would make the 2 payments equal. 
Let the hours be =13.
42+5*13<8.5*13
42+65<110.5
107<110.5 Thus Opt. 1 is cheaper than Opt. 2.