1.	Which of the following numbers is prime?
		A.	15	B.	5
		C.	9	D.	1
		Hint
	2.	Which of the following numbers is composite?
		A.	31	B.	1
		C.	23	D.	9
		Hint
	3.	Write the prime factorization of 204.
		A.	2 × 17	B.	6 × 17
		C.	2 × 2 × 3 × 17	D.	2 × 3 × 17
		Hint
	4.	Write the prime factorization of 810.
		A.	32 × 4 × 5	B.	2 × 34 × 5
		C.	2 × 5 × 92	D.	2 ×3 × 5
		Hint
	5.	Factor 8x2.
		A.	2 · 4 · x · x	B.	8 · x
		C.	2 · 2 · 2 · x · x	D.	2 · 2 · 2 · x
		Hint