Answer:
The unit rate is 1, for 1 mph
Step-by-step explanation:
The slope is:
m = -3/4
The absolute change in game length is ...
(180 min) -(150 min) = 30 min . . . . change in game length
__
The relative change is expressed as a fraction of the original game length:
(30 min)/(150 min) × 100% = 20% . . . . relative change in game length