1.	A whole number that has exactly two factors, the number itself and 1, is called a ______.
		A.	radical number	B.	composite number
		C.	square number	D.	prime number
		Hint
	2.	A whole number that has more than two factors is called a _____.
		A.	composite number	B.	prime number
		C.	square number	D.	radical number
		Hint
	3.	Simplify .
		A.		B.
		C.		D.
		Hint
	4.	To determine the speed of a vehicle involved in an accident, police officers use the formula . In the formula, s is the speed in miles per hour, d is the length of the skid marks in feet, and f is the friction factor. Suppose for a particular accident d = 45 feet and f = 0.8. What was the approximate speed of the vehicle?
		A.	198 miles per hour	B.	14 miles per hour
		C.	84 miles per hour	D.	33 miles per hour
		Hint
	5.	Simplify the expression .
		A.	13	B.	17
		C.	9	D.	12
		Hint