You need to specify what it was lowered too and what form of number do you want. Decimal? Percentage? Fraction?
Answer:
60 miles per hour
Step-by-step explanation:
For each point just divide the miles by the hour
120/2 = 60 mph
180/3 = 60 mph
240/4 = 60 mph
8(3y+11x) Would be your answer my friend