Answer:
55 mph
Step-by-step explanation:
First hour: 40 mph
Second, Third, Fourth hours:
180 miles / 3 hours = 60 mph
Average: 40 (hour 1) + 60 (hour 2) + 60 (hour 3) + 60 (hour 4) = 220 / 4 hours = 55 mph average
I hope this helps!
The graphed function has its local maximum at x = - 1 and local minimum at x = 2.
The function is decreasing between those points and increasing outside.
The increasing intervals are
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