Answer:
50 mph, 450 mi, 73.3 ft/sec
Step-by-step explanation:
Part 1:
Find the unit rate (which here is mph).
175 mi
------------- = 50 mph
3.5 hrs
Part 2:
In 8.5 hrs, the Andersons can expect to cover (50 mph)(8.5 hr) = 425 mi
Part 3:
50 mph 88 ft/sec
------------ * ----------------- = 73.33 ft/sec, or 73.3 ft/sec to the nearest tenth.
1 60 mph