(a)

Vehicle stopping distance is .

Where

: Distance that a car requires to come to a complete stop.

: speed in miles per hour.

Solve the equation for .

Speed in terms of distance is .

(b)

The equations are and .

Find .

.

Find .

.

is the inverse of .

(c)

Distance that a car requires to come to a complete stop is feet.

Substitute in .

.

Speed that a car was traveling is miles/hour.

(a) Speed in terms of distance is .

(b) is the inverse of .

(c) Speed that a car was traveling is miles/hour.