1.	Write the expression 4 · 4 · 4 · 4 · 4 using exponents.
		A.	55	B.	45
		C.	44	D.	54
		Hint
	2.	In the expression (-4)2, -4 is called the ______.
		A.	base	B.	power
		C.	product	D.	exponent
		Hint
	3.	Find y for y = x2 - 15 if x = 6.
		A.	-3	B.	51
		C.	21	D.	49
		Hint
	4.	Evaluate 7(a – b)3 if a = 3 and b = 1.
		A.	28	B.	56
		C.	8	D.	42
		Hint
	5.	Evaluate x5 - 13 if x = -2.
		A.	-45	B.	3
		C.	-23	D.	19
		Hint