Question

The formula r=2√5L can be used to approximate the speed r, in miles per hour, of a car that has left skid marks of length L, in feet. How far will a car skid at 60mph

Answer 1

is 'L' within the square root? i.e. is your equation:\[\text{a) }r=2\sqrt{5}L\]or is it:\[\text{b) } r=2\sqrt{5L}\]