1.	What are the prime factors of 120?
		A.	2, 60	B.	2, 2, 30
		C.	2, 2, 2, 3, 5	D.	2, 3, 5
		Hint
	2.	Which of the following numbers is composite?
		A.	23	B.	31
		C.	9	D.	1
		Hint
	3.	Write the prime factorization of 1500.
		A.	22 × 3 × 52	B.	22 × 3 × 52 × 102
		C.	22 × 3 × 53	D.	2 × 3 × 5
		Hint
	4.	Write the prime factorization of 810.
		A.	2 × 34 × 5	B.	2 × 5 × 92
		C.	2 ×3 × 5	D.	32 × 4 × 5
		Hint
	5.	Factor 8x2.
		A.	2 · 2 · 2 · x	B.	8 · x
		C.	2 · 4 · x · x	D.	2 · 2 · 2 · x · x
		Hint