Answer: The driver went over the speed limit.
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Step-by-step explanation:
The table shows f = 0.8 for dry concrete road.
The skid mark is d = 90 feet long
Plug these values into the formula below. Use your calculator to simplify.
s = sqrt(30*f*d)
s = sqrt(30*0.8*90)
s = 46.4758
The car's speed was roughly 46.4758 mph
The car is over the 35 mph speed limit.