10 × 30 = 300
(20 characters thing)
-4n-20>3n+8
-7n-20>8
-7n<28
n<-4
48.7 rounded to one significant figure would be 50
At gas station Z, it is $3.42 per gallon. At gas station Y, it is $3.37 per gallon. Gas station Y is a better deal and the cost per gallon of the gasoline at the gas station with the greater cost (gas station Z), is $3.42